This article was downloaded by:[University of Washington] On: 14 March 2008 Access Details: [subscription number 758878671] Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House, 37-41 Mortimer Street, London W1T 3JH, UK Leisure Sciences An Interdisciplinary Journal Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t713773100 Environmental Correlates of Physical Activity: A Review of Evidence about Parks and Recreation Andrew T. Kaczynski a; Karla A. Henderson b a University of Waterloo Waterloo, Ontario, Canada b North Carolina State University, Raleigh, North Carolina, USA Online Publication Date: 01 July 2007 To cite this Article: Kaczynski, Andrew T. and Henderson, Karla A. (2007) 'Environmental Correlates of Physical Activity: A Review of Evidence about Parks and Recreation', Leisure Sciences, 29:4, 315 - 354 To link to this article: DOI: 10.1080/01490400701394865 URL: http://dx.doi.org/10.1080/01490400701394865 PLEASE SCROLL DOWN FOR ARTICLE Full terms and conditions of use: http://www.informaworld.com/terms-and-conditions-of-access.pdf This article maybe used for research, teaching and private study purposes. Any substantial or systematic reproduction, re-distribution, re-selling, loan or sub-licensing, systematic supply or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date. The accuracy of any instructions, formulae and drug doses should be independently verified with primary sources. The publisher shall not be liable for any loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with or arising out of the use of this material. Downloaded By: [University of Washington] At: 23:14 14 March 2008 Leisure Sciences, 29: 315–354, 2007 C Taylor & Francis Group, LLC Copyright ISSN: 0149-0400 print / 1521-0588 online DOI: 10.1080/01490400701394865 Research Articles Environmental Correlates of Physical Activity: A Review of Evidence about Parks and Recreation ANDREW T. KACZYNSKI University of Waterloo Waterloo, Ontario, Canada KARLA A. HENDERSON North Carolina State University Raleigh, North Carolina, USA Research on physical activity (PA) has expanded in recent years to examine environmental influences that enhance or limit the opportunities people have to be active. The purpose of this study was to review and critically examine evidence related to parks and recreation as features of the built environment and the relationship of these settings to PA. Fifty studies were retrieved from four major databases that reported an empirical relationship between parks or recreation variables and PA variables. Mixed associations with PA were observed for different types of parks or recreation settings, while proximity to parks or recreation was generally associated with increased PA. Shortcomings exist in this literature and many opportunities for researching parks, recreation, and active living are evident for the future. Keywords active living, literature review, physical activity, social ecological models The connection between health and physical activity (PA) is well-documented (Hardman & Stensel, 2003; Sallis & Owen, 1999). This relationship is emphasized almost daily in relation to issues such as childhood obesity and the physical inactivity of North American populations. Only one-quarter of the U.S. population engages in the recommended amount of PA, and another one-quarter are inactive (Centers for Disease Control and Prevention, 2001). Estimates from the 2000–01 Canadian Community Health Survey indicated that 56% of Canadians were classified as insufficiently active (Canadian Fitness and Lifestyle Research Institute, 2002). Low levels of PA have been linked to a greater prevalence of obesity and related diseases including diabetes, cardiovascular disease, and cancer (Ball & McCargar, 2003; Bassuk & Manson, 2005; Stein & Colditz, 2004; U.S. Department of Health and Human Services, 1996; Westerlind, 2004). Along with poor nutrition and smoking, lack of exercise is among the top three modifiable risk factors for chronic disease Received 24 March 2006; accepted 12 September 2006. We would like to thank three anonymous reviewers for their insightful comments and Deb Bialeschki for overseeing the editorial process on this manuscript. This paper was presented at the 2006 Cooper Institute on “Parks, Recreation, and Public Health: Collaborative Frameworks for Promoting Physical Activity.” Address correspondence to Andrew T. Kaczynski, Department of Recreation and Leisure Studies, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1. E-mail: atkaczyn@ahsmail.uwaterloo.ca 315 Downloaded By: [University of Washington] At: 23:14 14 March 2008 316 A. T. Kaczynski and K. A. Henderson and premature death (World Health Organization, 2005). Therefore, improving PA levels has been consistently identified as a top public health priority (U.S. Department of Health and Human Services, 2000; The Integrated Pan-Canadian Healthy Living Strategy, 2005). The role that leisure services and parks and recreation settings play in helping people become physically active, and thus healthier, is beginning to be addressed. For example, Healthy People 2010 (U.S. Department of Health and Human Services, 2000) emphasized that the design of communities and the presence of parks, trails, and other public recreational facilities affect people’s abilities to reach the recommended 30 minutes per day of moderateintensity PA. Similar recommendations about access to places for PA, and specifically trails and facilities, were made by a collaboration of government agencies and private partners in the Guide to Community Preventive Services (Task Force on Community Preventive Services, 2002). Yet, the examination and documentation of parks and recreation settings as environmental correlates of PA is in its infancy. The involvement of leisure scientists in addressing many of these health related issues has been lacking (Henderson & Bialeschki, 2005). The purpose of this study was to review reported empirical evidence about the association between parks and recreation settings (PRSs) as features of the built environment and PA. Specifically, we aimed to answer the following questions: a) what types of PRSs are most related to increased PA levels, and b) how is proximity to PRSs related to PA? We defined PRSs as indoor and outdoor spaces and facilities in the physical and built environments designed for leisure and recreation activities. We anticipate that this review will provide a foundation and catalyst for new research by researchers with expertise in parks and recreation through transdisciplinary studies with other professionals. Review of Literature Sallis, Linton, and Kraft (2005) described how research on PA and health has entered a fourth major era. The first era (prior to 1970) dealt with physiological studies that examined the impact of patterns of PA on fitness. The second era (1970s–1990s) included epidemiological studies leading to PA being viewed as a major health priority. The third era that occurred in a similar time period focused on appropriate interventions for promoting PA. Most of this research primarily addressed psychosocial factors such as self-efficacy, social support, and stages of change models (Dishman, 1994; King et al., 2002; Sallis, Kraft, & Linton, 2002). The fourth era, which started early in this century, focused on a broader range of policy and environmental factors that promote health such as urban planning, transportation, housing, and parks and recreation. At the same time, parks, recreation, and leisure research has gone through research stages that addressed inputs, outputs, benefits, and explanations and meanings of recreation and leisure. Leisure researchers have moved beyond descriptions of inputs, outputs, and benefits to analyze how behavior occurs as a result of social and environmental factors (Ellis, 1993). The activities leisure researchers analyze often are broader than PA. However, to address health issues, these researchers are joining with other scholars (i.e., primarily in public health but also exercise scientists and urban planners) to examine more comprehensively the built environment associated with environmental correlates and ecological models. Ecological Models Ecology generally refers to the interrelations between organisms and their environments (Hawley, 1950). Social ecological concepts refer to people’s transactions with their physical and sociocultural environments (Henderson et al., 2001; Sallis & Owen, 2002; Stokols, 1992). Social ecology is derived from systems theory with people-environment transactions characterized by cultures of mutual influence (Bronfenbrenner, 1979; Green, Richard, & Downloaded By: [University of Washington] At: 23:14 14 March 2008 Parks, Recreation, and Physical Activity 317 Potvin, 1996). The general thesis of ecological models of behavior is that environments restrict the range of behaviors by promoting and sometimes demanding certain actions and by discouraging or prohibiting other behaviors. When environmental constraints operate in significant ways, they emerge as the overriding determinants of behavior (Bandura, 1986). O’Donnell (2005) argued, “An abundance of opportunity may cancel the need for education and motivation. An absence of opportunity will probably prevent even the most knowledgeable and motivated person from practicing a healthy lifestyle” (p. iv). The overemphasis on psychosocial and educational approaches to PA promotion that dominated the literature until recently is subject to increasing criticism. Marcus and Forsyth (1999) divided PA promotion efforts into downstream (e.g., programs to increase exercise self-efficacy), midstream (e.g., mass media campaigns), and upstream (e.g., altering building codes) interventions. Although they acknowledged at the time that evidence of the efficacy of upstream interventions was limited, they concluded that downstream interventions produced only 10–25% increases in PA and improvements were short-lived. In contrast, upstream interventions such as adding sidewalks or bike paths are more permanent strategies and can affect greater numbers of people than just those individuals who are the targets of downstream or midstream interventions such as mailings or physician counseling. Researchers also have shown that psychological and social factors explain less variance in moderate-intensity PA than vigorous activity (Sallis & Owen, 1999). This finding is significant because recent PA recommendations focus on promoting moderate-intensity PA (e.g., gardening, walking) that is more appealing and practical for a majority of the population while still providing significant health benefits (Pate et al., 1995). Thus, ecological efforts add explanatory value beyond the intrapersonal factors that influence people’s involvement and participation in physically active leisure. Stokols (1992) suggested that the core assumption of social ecology related to health promotion is that the healthfulness of the environment and the well-being of people are influenced by multiple facets of both the physical environment and the social environment. According to McLeroy et al. (1988), five classes of factors affect how or why a person might participate or fail to participate in a healthy behavior such as PA: intrapersonal, interpersonal, institutional, community, and public policy. Intrapersonal is the only factor focused on the individual and has limited value compared to the other four that acknowledge the context of people’s lives relative to supportive others as well as enabling and constraining opportunities and healthy environments. Richard et al. (1996) and Stokols, Allen and Bellingham (1996) suggested that health problems result from social structure and conditions. Consequently, constraints and motivations for PA can best be understood by examining the environments in which people live. The Built Environment and Physical Activity The specific relationships between the natural and built environment in communities and PA have not been prevalent in the leisure and recreation research literature (Henderson & Bialeschki, 2005). A social psychological approach (Mannell & Kleiber, 1997) has dominated in leisure research with the primary focus on individual behavior within that person’s environment. The leisure field has been concerned more often with the psychological processes of activity involvement (e.g., enjoyment, perceived freedom, or social interaction) than with the physiological product (e.g., lowered blood pressure). From a broader social and political context the value of parks and recreation has also been related to other goals such as environmental preservation as well as economic and community development, rather than focused on public health. Public health researchers, however, are examining the significant role that the built environment plays in fostering PA. Reviews similar to this study examined a wide array of Downloaded By: [University of Washington] At: 23:14 14 March 2008 318 A. T. Kaczynski and K. A. Henderson environmental variables and found substantial support for the ecological hypothesis. Early reviews by Sallis, Bauman, and Pratt (1998) and King et al. (1995) lamented a lack of empirical studies and conceptual models and were the impetus for research that examined environmental and policy interventions. Since then, researchers have developed increasingly sophisticated systems for classifying PA in community settings (Ainsworth et al., 2000; Bassett et al., 2000; McKenzie, Cohen, & Sehgal, 2005; McKenzie et al., 2000) as well as tools for measuring environmental correlates of PA (Brownson et al., 2004; Pikora et al., 2002; Pikora et al., 2003; Saelens, Sallis, Black, & Chen, 2003). More recent reviews of the literature (Humpel, Owen, & Leslie, 2002; McCormack et al., 2004; Owen et al., 2004; Saelens, Sallis, & Frank, 2003) found fairly consistent positive associations between PA and factors in the built environment such as access to facilities, safety, and aesthetics. These reviews also reported that transportation and zoning variables (e.g., mixed land use, population density, connectivity of streets, and presence of sidewalks) exhibited strong relationships with residents’ PA levels. The role that PRSs may play in fostering increased PA has received growing attention. For example, Sallis et al.’s (1998) review concluded that children were more active outdoors and that being outdoors was the most powerful correlate of PA. Corti, Donovan, and Holman (1997) indicated that parks were more likely to stimulate activity if they were aesthetically pleasing with tree-lined paths rather than empty open space. Troped et al. (2001) determined that decreased distance between a person’s home and a trail was associated with greater trail use. Arguments have also been forwarded recently in the American Journal of Preventive Medicine that PRSs can make significant contributions to facilitating PA (Bedimo-Rung, Mowen, & Cohen, 2005; Godbey et al., 2005). Additional recognition of the growing role that parks and recreation has to play in addressing health and PA was also found in a recent special issue of Leisure Sciences (Henderson & Bialeschki, 2005), the advocacy promoted by Payne (2002) and her colleagues (Payne et al., 2005), in National Recreation and Park Association’s (2005) “Step up to Health” program, and through the focus that the Robert Wood Johnson Foundation’s Active Living Research Program has placed on research about parks and recreation (Sallis & Linton, 2005). Although research has been undertaken addressing the built environment and PA, no analysis has systematically considered the role of PRSs. Several previous literature reviews have included a small number of variables related to parks and recreation (Humpel et al., 2002; Owen et al., 2004), but little detail is available about the complex associations between these settings and community-based PA. Therefore, the purpose of this article is to review and critically examine evidence related to PRSs as features of the built environment and the relationship they have to PA. Methods To address our purpose, we identified peer-reviewed journal articles in which an association between PRSs and PA was reported as part of the investigation. Although most articles did not provide an explicit definition of PA, PA is commonly defined as “any bodily movement produced by skeletal muscles that results in energy expenditure” (Caspersen, Powell, & Christenson, 1985, p. 126). In December 2005, searches were conducted within four major databases—PsycInfo, PubMed, LeisureTourism Abstracts, and Web of Science—using search terms tailored to each database.1 1 PsycInfo: AB = (“physical activity” OR exercise OR inactivity OR walking) AND AB = (environment OR neighborhood OR “urban design” OR park OR trail OR greenway). PubMed: Search (“Motor Activity”[MeSH] OR “Exercise”[MeSH]) AND “Environment Design”[MeSH] Downloaded By: [University of Washington] At: 23:14 14 March 2008 Parks, Recreation, and Physical Activity 319 Only articles printed in English were requested, and the date range for articles was delimited to the period 1998–2005. Although one review of environmental correlates predated our selected timeframe (King et al., 1995), as did particular studies mentioned in Sallis et al.’s (1998) review, the year 1998 was considered a reasonable starting point for identifying research related to the built environment and PA for several reasons. For example, as noted earlier, Sallis et al. (2005) described the fourth phase of PA research that occurred since the early 2000s as being primarily concerned with understanding and altering policy and environmental factors. The Centers for Disease Control and Prevention convened a multidisciplinary conference of health professionals in 1997 and “that meeting was the dawn of what we are now calling the active living movement” (Killingsworth, Earp, & Moore, 2003, p. 1). In addition, the 1997 Cooper Institute’s annual conference focused on PA interventions including some environmental studies, and papers presented at that conference were published in a special issue of the American Journal of Preventive Medicine early the following year (Blair & Morrow, 1998). Therefore, 1998 was an appropriate starting point for our analysis. The searches of the four databases returned a total of 1120 distinct articles after merging the results and removing all duplicate records. The primary author then scanned article abstracts to determine each paper’s relevance to our current study’s purpose. Articles were initially excluded from further analysis if they failed to meet any of several criteria. First, we were only interested in studies that included PA as a dependent variable and not research that measured relationships between the built environment and other health measures (e.g., body mass index, mental health, cardiovascular disease). Second, articles that examined other psychological or interpersonal correlates of PA (e.g., self-efficacy, social support) without including environmental variables were omitted. Third, articles that analyzed the built environment or PA concurrently, but only as these two behaviors related to a third variable or condition (e.g., maximal oxygen uptake) were excluded. Fourth, studies that simply controlled for environmental influences and/or PA while examining the relationship between two other variables were also excluded. Some studies existed that examined worksite and school environments in relation to PA. The former were excluded because they appeared minimally related, if at all, to PRSs. Schools, on the other hand, often constitute an important source of indoor and outdoor recreational opportunities for communities. However, of the few articles uncovered in our searches that examined school environments related to PA, none were deemed relevant to our study’s purpose. For example, some addressed only physical education class participation as opposed to the broader concept of PA. In other cases, factors not part of the built environment were the main focus of the study (e.g., length of breaks during the day, available sports equipment). However, many if not most studies of the built environment measured the location of PA resources (e.g., a playground) in a manner that was so general that schoolbased PRSs, especially accessible outdoor ones, would likely be included in the tally of available resources. Finally, only original empirical studies were examined. Conceptual papers, review articles, and studies that were purely methodological in purpose (e.g., validating self-report measures of the built environment or PA) were not considered. In summary, similar to Humpel et al.’s (2002) work, “Only those studies that measured environmental variables that could be related individually and directly to measured physical activity variables were Field: MeSH Terms. LeisureTourism Abstracts: ( (environment) in ABSTRACT OR (neighborhood) in ABSTRACT OR (park) in ABSTRACT OR (trail) in ABSTRACT)) AND ((physical activity) in ABSTRACT OR (exercise) in ABSTRACT OR (walking) in ABSTRACT)). Web of Science: TS = (physical activity OR exercise OR walking) AND TS = (environment OR neighborhood OR urban design OR park OR trail OR greenway); Database = SSCI. Downloaded By: [University of Washington] At: 23:14 14 March 2008 320 A. T. Kaczynski and K. A. Henderson retained” (p. 189). Application of these criteria temporarily reduced the original set of articles to a list of 105 studies that described empirical relationships between some aspect of the built environment and PA levels. Within these 105 articles, four journals were represented by more than five papers: American Journal of Health Promotion, American Journal of Preventive Medicine, American Journal of Public Health, and Preventive Medicine. Subsequently, a total of 263 issues for these four journals from 2000 to 2005 were hand-searched to identify any relevant articles that were missed by the previously described database searches. This process revealed only two additional studies that satisfied the aforementioned criteria. One of the 107 articles identified could not be acquired despite extensive search efforts. Four of the remaining 106 articles were qualitative studies, and within three of these, the utility of the contextual findings to our study’s purpose was difficult to summarize. Consequently, all qualitative studies were removed, and we analyzed only quantitative articles. However, some of this qualitative literature is described in the discussion section of the paper. Within the remaining set of 102 articles, we sought to identify only those studies that reported an association between PA and some aspect of parks or recreation settings (e.g., presence of, distance to) as features of the built environment. Consequently, although rare, studies with parks and recreation programming (e.g., skills training) as the focus were excluded from our review. Similarly, associations between PA levels and questionnaire items that related solely to the presence of recreational equipment (e.g., treadmills) in respondents’ homes also were not included in our study. Some studies that examined environmental influences on PA frequently inquired about generalized variables such as access to facilities or places to exercise. Such broadly defined measures were not considered to be clearly related to parks and recreation because they could easily be interpreted as referring to other PA amenities (e.g., streets). Composite measures (e.g., aggregations of individual access ratings for multiple types of facilities or a single summary score covering all aspects of the built environment) were often described but only included when a large majority of the items in the measure were related to PRSs. In the end, a total of 50 articles were reviewed that reported empirical quantitative relationships between PRSs as features of the built environment and PA levels of the study participants. The following section describes the nature of these relationships. Results Table 1 provides brief summaries of the empirical associations that were reported in the 50 primary articles in which a relationship between parks or recreation and PA was directly analyzed. The first three columns of the table describe the age, location, and size of the study sample and whether it was representative of the larger population. Brief descriptions of the parks or recreation and PA variables are provided along with the associations among them reported by the original authors. In 20 of the 50 studies (40%), all or most of the associations examined between parks or recreation and PA variables were positive (Ball et al., 2001; Bauman et al., 1999; Blanchard et al., 2005; Booth et al., 2000; Brownson et al., 2001; Chad et al., 2005; Deshpande et al., 2005; Fisher et al., 2004; Giles-Corti et al., 2005; Giles-Corti & Donovan, 2003, 2002a; Gordon-Larsen, McMurray, & Popkin, 2000; Humpel et al., 2004; Humpel et al., 2004; Li, Fisher, & Brownson, 2005; Mota et al., 2005; Reed et al., 2004; Troped et al., 2001; van Lenthe, Brug, & Mackenbach, 2005; Vernez-Moudon et al., 2005). Nine of the articles (18%) reported that the associations examined were not significant (Atkinson et al., 2005; Carver et al., 2005; Duncan & Mummery, 2005; Giles-Corti & Donovan, 2002b; Lund, 2003; Norman et al., 2005; Plaut, 2005; Romero, 2005; Wilcox et al., 2000), while one study reported a negative relationship (Duncan et al., 2004). 321 Population1 18+ year olds in southeastern U.S. county Adults in two neighborhoods in San Diego, CA Adults in New South Wales, Australia Authors and date 1. Addy et al. (2004) 2. Atkinson et al. (2005) 3. Ball et al. (2001) 3392∗ 102∗ 1194∗ N2 Convenience summary score of agreement on 5-pt scales that 3 items are within walking distance: shops, park or beach, cycle path Neighborhood (within 0.5 miles or 10-minute walk of home) and community (10 miles or 20-minute drive) recreation facilities, walking/biking trails, swimming pools, parks, playgrounds, sports fields Tally of convenience (5-minute drive, 10-minute walk, or on frequently traveled route) for 18 recreational or exercise facilities (yes/no for each) Parks or recreation variable(s)3 Walking for exercise in past 2 weeks (any vs. none) Sufficiently active (5+ days with 30+ minutes of moderate PA or 3+ days with 20+ minutes of vigorous PA in past week) Insufficiently active (less PA) Inactive (no moderate or vigorous PA) Number of self-reported episodes in past 7 days of moderate, vigorous and total PA Minutes of moderate, vigorous and total PA measured by accelerometer Physical activity variable(s)3 Association(s)4 Users of neighborhood recreation facilities significantly more likely to be sufficiently active (OR = 4.36) or insufficiently active (OR = 7.26) than inactive Users of community parks significantly more likely to be sufficiently active (OR = 1.96) or insufficiently active (OR = 2.20) than inactive Convenient recreational facilities not significantly related to moderate, vigorous, or total (r = .17) self-reported PA Convenient recreational facilities not significantly related to moderate, vigorous, or total minutes of objectively-measured PA Respondents reporting low (OR = .64) and moderate (OR = .84) convenience of facilities significantly less likely to walk for exercise than those reporting high convenience of facilities. Similar results found when sample divided into those in poor and good health. (Continued on next page) TABLE 1 Articles Reporting Empirical Associations between Parks and Recreation Amenities and Physical Activity Downloaded By: [University of Washington] At: 23:14 14 March 2008 322 18+ year olds in New South Wales, Australia Adults across U.S. 60+ year olds across Australia 5. Blanchard et al. (2005) 6. Booth et al. (2000) Population1 4. Bauman et al. (1999) Authors and Date 449∗ 6739∗ 16,178∗ N2 Access to local exercise hall, recreation center, cycle path, golf course, gym, park, swimming pool, tennis court, bowling green (yes/no; asked individually) Summary score of availability of nine recreation facilities in neighborhood Live in postal code that touches coastline Parks or Recreation Variable(s)3 Association(s)4 Respondents from coastal locations significantly less likely to be sedentary (OR = .77) and more likely to be adequately active (OR = 1.27) or vigorously active (OR = 1.38) than respondents from inland locations Number of days in past Availability of recreation facilities a week that included 30+ significant predictor of PA in minutes of total normal weight (BMI = 20–25) moderate or vigorous PA and overweight (BMI = 25–30) respondents, but not in obese (BMI>30) respondents Sufficiently active (>800 In bivariate analyses, significantly kcals·kg−1 energy greater proportion of active than expenditure per week) inactive respondents reported Inactive (<800 kcals.kg−1 access to an exercise hall (38.5% per week) vs. 26.9%), recreation center (38.5% vs. 26.9%), cycle track (46.9% vs. 34.1%), golf course (46.9% vs. 37.2%), park (81.0% vs. 63.7%), and swimming pool (58.7% vs. 44.4%) In multivariate analysis, only having access to a local park significantly increased odds (OR = 1.14) of sufficient PA Vigorously active (>1600 kcal/wk) Adequately active (>800 kcal/wk) Sedentary (<50 kcal/wk) Physical Activity Variable(s)3 TABLE 1 Articles Reporting Empirical Associations between Parks and Recreation Amenities and Physical Activity (Continued) Downloaded By: [University of Washington] At: 23:14 14 March 2008 323 Adults across U.S. 18+ year olds from 12 counties in southeast Missouri 12–14 year olds in western Sydney, Australia 7. Brownson et al. (2001) 8. Brownson et al. (2000) 9. Carver et al. (2005) 347 1269∗ 1818∗ Access to walking/jogging Meets PA recommendation Meeting PA recommendation (5+ days with 30+ trail, park, indoor gym significantly associated with (yes/no; asked minutes of moderate PA access to walking/jogging trails individually) or 3+ days with 20+ (OR = 1.55), parks (OR = 1.95), minutes of vigorous PA and indoor gyms (OR = 1.94) in past week) Access to walking trails Increase in walking since Of those who reported having (trails or paths in beginning to use trail access to and having used a area—yes/no) (yes/no) walking trail, 55% reported an Used walking trail increase in walking since they (yes/no) began to use the trail Length of trail Distance to Persons using longer trails (>0.25 trail miles) significantly more likely to report an increase in walking since using trail Distance to trail not significantly related to an increase in walking since using the trail Of all walking or cycling and Parents’ agreement that Adolescents’ reports of “our neighborhood has their frequency and purpose combinations, sports duration of walking and facilities a significant predictor of good sports facilities” (1 only frequency (not duration) of cycling for exercise, or 2 on a scale ranging cycling for transport and only in from -2 to 2) recreation, transport, and to/from school boys (Continued on next page) Downloaded By: [University of Washington] At: 23:14 14 March 2008 324 18–65 year olds in Ghent, Belgium 11. De Bourdeau– dhuij et al. (2003) 12. Deshpande et 20+ year olds in al. (2005) Missouri, Tennessee and Arkansas 50+ year olds in a midsized Canadian city Population1 10. Chad et al. (2005) Authors and Date 278∗ 521∗ 764 N2 Physical Activity Variable(s)3 Association(s)4 Summary score for Significantly higher PA scores for Presence of facilities participation in 12 respondents reporting the within neighborhood presence of biking trails, (within 5-minute walk or activities of varying intensities more specific walking/hiking trails, golf course, drive): biking trails, to older adult public park, skating rink, walking/hiking trails, golf course, public park, populations (e.g. yard swimming pool, and tennis care, volunteering, etc.) courts. Some minor differences in skating rink, swimming significance of facilities when pool, tennis courts, dance studio, public sample split into 50–64, 65–79, and 80+ age groups. recreation center Tally of convenience Minutes of sitting, For both males and females, (5-minute drive from walking, convenience of facilities score work or home or on moderate-intensity, and significantly related to amount of frequently traveled vigorous-intensity vigorous activity only route) for 18 recreational activities during past or exercise facilities week (measured (yes/no for each) separately) Use of community Engage in regular PA Significantly increased odds of (30+ minutes at least 5 engaging in regular PA for facilities in past 30 days (used/did not use): park, days per week) respondents who had used a park recreation center, (OR = 4.21), recreation center (OR = 12.20), trail (OR = 3.81), biking/walking trail, public swimming pool, or health club (OR = 7.48). Odds health club increased dramatically with use Number of minutes to of 3+ facilities. walk from home to each Shorter walking times to park, recreation center, trail, and health of above facilities club associated with more regular PA Parks or Recreation Variable(s)3 TABLE 1 Articles Reporting Empirical Associations between Parks and Recreation Amenities and Physical Activity (Continued) Downloaded By: [University of Washington] At: 23:14 14 March 2008 325 10–14 year old siblings in 58 neighborhoods in Pacific Northwest U.S. 18+ year olds across U.S. 14. Duncan et al. (2004) 15. Eyler et al. (2003) 13. Duncan and 18+ year olds in Rockhampton, Mummery Australia (2005) 1818∗ 930∗ 1281∗ No walking/jogging trails There are playgrounds, parks, or gyms close to my home or that I can get to easily (1–5, disagree-agree) Number of parks and exercise and recreational facilities in neighborhood Street network distance to nearest parkland (Continued on next page) Achieves recommended Participants with parkland beyond PA level (150 minutes in 600 m significantly more likely to past week) achieve recommended PA level Any recreational walking (OR = 1.41) than those less than in past week 600 m from parkland Parkland proximity not related to recreational walking Perceptions of neighborhood Number of days in past week that each sibling recreational facilities and count of number of neighborhood PA took part in: vigorous facilities were both negatively exercise for 20+ minutes; stretching and significantly related to family levels of PA exercises; strengthening exercises Number of days of vigorous PA in a typical week for each sibling Regular walker (5x/week Never walkers significantly more for 30 min) likely to report a lack of Occasional walker (walk walking/jogging trails than 10+ min at least once regular walkers (OR = 1.59) during past week) Occasional walkers not Never walker (did not significantly more likely to report walk 10+ min at least a lack of walking/jogging trails once in past week) than regular walkers (OR = 1.18) Downloaded By: [University of Washington] At: 23:14 14 March 2008 326 64–94 year olds from 56 neighborhoods in Portland 16–74 year olds across England 18–59 year olds in Perth, Australia 17. Foster et al. (2004) 18. Giles-Corti et al. (2005) Population1 16. Fisher et al. (2004) Authors and Date 1803∗ 4157∗ 582∗ N2 Three models of access to public open space (each divided into quartiles: very poor, poor, good, very good): 1) Distance only model 2) Distance and attractiveness model 3) Distance, attractiveness, and size model A park/open space is within walking distance (agree/disagree) A leisure center is within walking distance from my home (yes/no) Total parks, paths, trails per neighborhood acre Parks or Recreation Variable(s)3 Association(s)4 Neighborhood walking Walking facilities per neighborhood activity (score derived acre significantly related to from individuals’ neighborhood walking activity responses to 3 behavior questions rated on 5-pt scale) Walking >150 minutes per In bivariate analyses, neither the week in past four weeks park nor leisure center variable Walking at least 15 were significantly related to either minutes per week in past walking measure in either men or four weeks women In multivariate analyses, for men, having a park within walking distance was only environmental variable associated with higher odds of walking >150 minutes per week (OR = 2.22) Achieves sufficient PA For distance-only (OR = 0.69) and (30+ minutes of distance plus attractiveness moderate PA on most (OR = 0.71) models, poor access days of week) to public open space significantly High levels of walking decreased odds of achieving (6+ walking sessions sufficient PA compared to those per week totaling 180+ with very poor access minutes) For distance, attractiveness, and size model, having very good access to public open space significantly Physical Activity Variable(s)3 TABLE 1 Articles Reporting Empirical Associations between Parks and Recreation Amenities and Physical Activity (Continued) Downloaded By: [University of Washington] At: 23:14 14 March 2008 327 18–59 year olds in Perth, Australia 18–59 year olds in Perth, Australia 18–59 year olds in Perth, Australia 19. Giles-Corti and Donovan (2003) 20. Giles-Corti and Donovan (2002a) 21. Giles-Corti and Donovan (2002b) 1803∗ 1803∗ 1803∗ Access to built facilities: e.g. golf course, health club (divided into quartiles) Access to natural facilities: e.g. beach, river (divided into quartiles) Exercising as recommended (30+ minutes of moderate PA on most days of week) Access to attractive public Walking at recommended levels (12+ sessions in open space, river, beach, previous 2 weeks golf course (divided into quartiles) totaling 360 minutes or more) Access to open space (top In past two weeks: any quartile vs. other three walking for transport; quartiles combined) any walking for Access to beach (top recreation; any vigorous quartile vs. other three exercise quartiles combined) Walking as recommended (6+ times per week for 30+ minutes) Exercising vigorously at recommended level (3+ times per week for 20+ minutes) (Continued on next page) increased odds of engaging in high levels of walking compared to those with very poor access (OR = 1.50) Participants in top quartile of access exhibited significantly higher odds of sufficient walking than those in bottom quartile of access (OR = 1.47) Being in top quartile of access to open space significantly increased odds of walking for transport (OR = 1.35) and walking as recommended (OR = 1.43) Being in top quartile of access to beach significantly decreased odds of walking for transport (OR = 0.62), but significantly increased odds of walking for recreation (OR = 1.49), exercising vigorously at all in past two weeks (OR = 1.38), and exercising vigorously at recommended level (OR = 1.58) Neither access to built facilities nor access to natural facilities significantly related to exercising as recommended Downloaded By: [University of Washington] At: 23:14 14 March 2008 328 Grade 7 students at 5 schools in San Antonio, TX Grade 7–12 students across U.S. 18–96 year olds in areas of St. Louis, MO and Savannah, GA 23. GordonLarsen et al. (2000) 24. Hoehner et al. (2005) Population1 22. Gomez et al. (2004) Authors and Date 1073∗ 17,766∗ 177 N2 Physical Activity Variable(s)3 Straight line distance from Bouts per week of outdoor, participant’s home to non-school related PA nearest open play area (based on recall of (playground, pool, number of days per athletic field) month and number of months per year) Use of neighborhood Number of episodes of recreation center (use/do moderate to vigorous PA not use) per week (based on 7-day activity recall questions) Hours per week of physical inactivity (TV/video watching and video game playing) There are many places to Recreational PA (not including transport) be active in my community, not during leisure-time: including streets Meets PA recommendation (5+ Park, walking trail, private fitness facility within days with 30+ minutes of moderate PA or 3+ 5-minute walk of home days with 20+ minutes (yes/no–individually) Number of recreation of vigorous PA in past week) facilities within 5-minute walk of home Does not meet recommendation Parks or Recreation Variable(s)3 Respondents who agreed that there are many places to be active (OR = 2.0) and that reported 2–3 recreation facilities within 5-minute walk (OR = 1.6) significantly more likely to meet PA recommendation (but trends not clear) Having any of park, walking trail, or private fitness facility within 5-minute walk not associated with meeting PA Using recreation center significantly increased odds of falling into highest (5+ episodes/wk) PA category (OR = 1.75), but was not associated with being in the highest (25+ hrs/wk) inactivity category (OR = 1.01) Distance to nearest open play area inversely and significantly related to bouts per week of outdoor PA in boys, but not in girls or total sample Association(s)4 TABLE 1 Articles Reporting Empirical Associations between Parks and Recreation Amenities and Physical Activity (Continued) Downloaded By: [University of Washington] At: 23:14 14 March 2008 329 Faculty and staff at an Australian university 40+ year olds from a coastal Australian city 25. Humpel, Marshall et al. (2004) 26. Humpel, Owen, Iverson et al. (2004) 399∗ 800∗ and 512 at 10-wk follow up Live in postal code that Number of minutes per touches coastline week of neighborhood Lake or beach within easy walking, walking for walking distance exercise, for pleasure, and to get to and from places (separately) (7 total) Within 400 m of respondent’s home: Count of parks with facilities; Any park, trail or fitness facility; Count of recreational facilities Number of minutes per Summary ‘convenience’ score of (each item rated week of neighborhood 1–10 for unfavorable to walking favorable): Walking distance to park/beach Accessibility of path/cycle way Overall convenience of neighborhood for walking In both men and women, increased perceptions of convenience related to significantly increased odds of any increase in walking (OR = 1.95 and 2.58, respectively), increase of 30 or more minutes of walking (OR = 2.02 and 2.31, respectively), and increase of 60 or more minutes of walking (OR = 1.98 and 2.01, respectively) In bivariate analyses, participants living in coastal postal code reported significantly more minutes walking in neighborhood (189 vs. 149) and for exercise (139 vs. 109) than those in non-coastal postal code In bivariate analyses, participants with a lake or beach within walking distance reported (Continued on next page) recommendation None of the objective measures of parks or recreation facilities significantly related to meeting PA recommendation Downloaded By: [University of Washington] At: 23:14 14 March 2008 330 Faculty and staff at an Australian university 18+ year olds in 6 counties in North Carolina 28. Huston et al. (2003) Population1 27. Humpel, Owen, Leslie et al. (2004) Authors and Date 1796∗ 800∗ N2 Physical Activity Variable(s)3 Association(s)4 significantly more minutes walking in neighborhood (224 vs. 139), for exercise (163 vs. 100), and for pleasure (33 vs. 21) In multivariate analyses, living in coastal postal code not significantly associated with increased odds of any type of walking for men, but greater odds of neighborhood walking for women (OR = 3.32) In men, participants in high Number of minutes per Summary ‘convenience’ week of neighborhood convenience tertile exhibited score split into low, significantly higher odds of moderate, high tertiles walking (split into high and low groups at neighborhood walking (OR = based on (each item median) 2.20) and total PA (OR = 1.82) rated 1–10 for than those in low convenience unfavorable to Number of minutes per week of total walking tertile favorable): Walking distance to (split at median) In women, those in high (OR = Number of minutes per 3.78) and moderate (OR = 3.19) park/beach week of total PA (split at convenience tertiles exhibited Accessibility of path/cycle significantly higher odds of way median) Overall convenience of neighborhood walking than those in low convenience tertile neighborhood for walking Trails in neighborhood Any leisure-time PA in In bivariate analyses, respondents (yes/no) past month reporting presence of trails Meets PA significantly more likely recommendation (5+ Parks or Recreation Variable(s)3 TABLE 1 Articles Reporting Empirical Associations between Parks and Recreation Amenities and Physical Activity (Continued) Downloaded By: [University of Washington] At: 23:14 14 March 2008 331 52–62 year old women in Pittsburgh area Older women in Pittsburgh area 29. King et al. (2005) 30. King et al. (2003) 149 158 Is facility within walking distance? (1500 m from home along road network): park, walking/biking trail, museum or art gallery, golf course Is facility within walking distance? (20-minute walk from home): park, walking/biking trail, community center Average number of steps per day (7 days of pedometer readings) Walking activity (kcal/week) Total PA (kcal/week) Significantly greater steps per day for participants with a park or trail within walking distance, but no difference for community center Having none of the three facilities within walking distance was associated with significantly greater self-reported walking or total PA (Continued on next page) to engage in any PA (77.8% vs. 70.3%) and recommended PA (31.3% vs. 23.8%) than those reporting no trails In multivariate analyses, reported presence of trails not associated with higher odds of any PA, but marginally associated with recommended PA (OR = 1.46, p < .10) Average number of steps Significantly greater steps per day for participants with a golf course per day (as measured by pedometer over 7 days) within walking distance, but no difference for having park, trail, or museum within walking distance days with 30+ minutes of moderate PA or 3+ days with 20+ minutes of vigorous PA in past week) Downloaded By: [University of Washington] At: 23:14 14 March 2008 332 577 65–94 year olds in 56 neighborhoods in Portland, OR 8 neighbor-hoods in Portland 32. Li, Fisher, Brownson and Bosworth (2005) 33. Lund (2003) n/a 303 N2 65–94 year olds in 28 neighborhoods in Portland Population1 31. Li, Fisher and Brownson (2005) Authors and Date Association(s)4 Number of strolling or destination trips not significantly different between neighborhoods with park access only and control group of neighborhoods with no access to parks or retail amenities Neighborhood walking Neighborhoods with greater access activity (score derived to recreational PA facilities from individuals’ showed less decline in walking responses to 3 behavior activity over four measurement questions rated on 5-pt time points (baseline, 3 months, 6 scale) months, 12 months) At neighborhood level, area of Neighborhood walking green and open space in activity (neighborhood neighborhood significantly score derived from individuals’ responses to related to neighborhood walking At individual resident level, area of 3 behavior questions green and open space and number rated on 5-pt scale) of recreation facilities significantly related to walking. Having playgrounds, parks, or gyms close by not significantly related to walking. Physical Activity Variable(s)3 Total acres of green and open space for recreation per neighbourhood Total acres of green & open space for recreation within 0.5 mile radius of participant’s home There are playgrounds, parks, or gyms close by that I can get to easily (1–5, disagree-agree) Number of recreational facilities in the neighborhood (out of 11) Neighborhood has park Number of strolling trips access only (vs. has in previous week retail access only, retail Number of destination and park access, or trips in previous week access to neither park or retail) There are playgrounds, parks, or gyms close by that I can get to easily (1–5, disagree-agree) Parks or Recreation Variable(s)3 TABLE 1 Articles Reporting Empirical Associations between Parks and Recreation Amenities and Physical Activity (Continued) Downloaded By: [University of Washington] At: 23:14 14 March 2008 333 7th-12th grade students 11–15 year olds in San Diego Adults across U.S. 18–96 year olds in a rural south-eastern U.S. community 34. Mota et al. (2005) 35. Norman et al. (2005) 36. Plaut (2005) 37. Reed et al. (2004) 1112∗ 38,243∗ 878 1123 My neighborhood has PA score out of 20 (5 PA Significantly greater percentage of several public recreation questions scored on 4-pt active (49.3%) than non-active facilities, such scales) divided into (41.6%) respondents agreed with as . . . (single item; non-active (0–10) and the presence of recreational agree/disagree) active (11–20) facilities Total minutes spent doing In bivariate analyses for both girls Recreation in (OR = 1.01) and boys (OR = four sedentary activities neighborhood score 1.08), recreation in neighborhood assessed by proximity of (TV, video games, sitting listening to music, and score not significantly related to five facilities (each rated time spent in sedentary activities talking on phone) on on a 5-pt proximity scale most recent non-school anchored by 1–5 minutes and 31+ day: <240 minutes vs. >240 minutes minutes): school, park, recreation center, gym, fitness facility Live close to green area Mode of travel to work 37.1% of car commuters, 28.9% of (within half block) (car, bicycle, walk) bicycle commuters, and 36.3% of people who walk to work live close to a green area Use of a community trail Sufficiently active (5+ 42% of trail users reported being (within 10 miles or 20days with 30+ minutes sufficiently active and 51% minute drive): used, did of moderate PA or 3+ engaged in a lesser amount of PA not use, did not have days with 20+ minutes 49% of regular walkers and 35% of of vigorous PA in past people who walked a lesser week) amount reported using trails Regular walker (5+ days per week for 30+ minutes) (Continued on next page) Downloaded By: [University of Washington] At: 23:14 14 March 2008 334 Undergraduate students at a U.S. university 10–16 year olds in a mid-sized southwestern U.S. city 25–69 year olds in El Paso County, TX 39. Romero (2005) 40. Rutt and Coleman (2005) Population1 38. Reed and Phillips (2005) Authors and Date 943∗ 74 411∗ N2 Physical Activity Variable(s)3 Proximity of exercise Frequency (number of facility (average exercise bouts over distance from home to 7-day period) facilities used over a one Intensity (sum of METs × week period) minutes for each type of activity) Duration (number of minutes per exercise bout over 7-day period) Total PA (METs × frequency) Availability of six Number of days in past week that included 20+ facilities (yes/no; 0–6 minutes of vigorous index score): community center, outdoor activity park/facility, YMCA/YWCA, school playground, backyard/front yard, home gym Total number of parks, Minutes per week during gyms, schools, and past month engaged in biking/walking paths light (e.g. walking), within 2.5 miles of moderate (e.g. yoga), participant’s home and vigorous (e.g. Street distance to each swimming) activities type of facility Parks or Recreation Variable(s)3 Number of facilities not related to any PA measure Distance to facilities a significant predictor of vigorous PA Availability of facilities not significantly correlated to PA In both total sample and females, proximity significantly correlated to intensity and duration In males, only significant correlation was between proximity and frequency Association(s)4 TABLE 1 Articles Reporting Empirical Associations between Parks and Recreation Amenities and Physical Activity (Continued) Downloaded By: [University of Washington] At: 23:14 14 March 2008 335 42. Timp-erio et al. (2004) 5–6 and 10–12 year olds and their parents in Melbourne, Australia 41. Sharpe et 18+ year olds in 2 al. (2004) South Carolina counties 1210∗ 1936∗ Number of days in typical Meets PA recommendation Significantly greater predictors of (5+ days with 30+ meeting PA recommendation than month used public trail, minutes of moderate PA not meeting recommendation track, path or mapped or 3+ days with 20+ included number of days used a route for PA minutes of vigorous PA track, trail, pathway, or mapped Number of days in a in past week) route for PA, number of days used typical month used a Does not meet PA public parks and other outdoor public park or other recommendation recreation areas for PA, and outdoor recreation area having higher number of known for PA routes for walking and bicycling Knowledge (number) of in county walking or jogging Perceptions of number of parks, routes in county trails, and other outdoor Knowledge (number) of recreation areas not associated known bicycling routes with meeting PA recommendation in county Perceptions of the number of parks, trails or other outdoor recreation areas in county No parks or sports grounds Child’s walking or cycling Significantly lower odds of walking near where I live (10–12 to destinations (e.g. or cycling for 10–12 year olds year olds’ agreement on playgrounds, shops, agreeing with no nearby parks 5-pt scale) school, etc.) at least (OR = 0.5), but no association for Few sporting venues three times per week few sporting venues among within our local area younger age group (parents’ agreement on 5-pt scale) (Continued on next page) Downloaded By: [University of Washington] At: 23:14 14 March 2008 336 18+ year olds in Arlington, MA 20–69 year olds in Eindhoven, Netherlands 44. Troped et al. (2001) 45. Van Lenthe and Mackenbach (2005) 46. VernezMoudon et al. (2005) 8767∗ 419∗ 413∗ N2 47. Wendel-Vos et 20–59 year olds in al. (2004) Maastrict, The Netherlands 11,541∗ 18+ year olds in 608∗ King County, WA 18+ year olds in Arlington, MA Population1 43. Troped et al. (2003) Authors and Date Physical Activity Variable(s)3 Association(s)4 Cyclist (bike at least once Significantly higher odds of cycling per week in with presence of bicycle lanes neighborhood for and trails recreation, exercise, or Distance to closest rail trail transportation) associated with higher odds of cycling Square hectares of each Hours per week of each of For leisure-time activity, only green or recreation walking and bicycling significant relationship was space within 300-m and for each of leisure-time between bicycling and sport 500-m radius: woods, and commuting purposes grounds within 300 m radius parks, sport grounds For commuting activity, only (e.g. tennis courts but significant relationships were not fitness centers), between bicycling and sport day-trip grounds (e.g. grounds and parks within a 300 m zoo) radius Presence of bicycle lanes and trails in neighborhood Distance to closest rail trail Road network distance to Minutes per week of Distance to rail-trail significantly access point for a paved recreational PA and negatively related to minutes community rail-trail Minutes per week walking of PA for transportation, but not or cycling for related to recreational PA transportation Distance to bike trail (to Any use of bike trail over For every 0.25 mile increase in closest quarter mile) past four weeks distance to trail, participants were 0.65 times more likely to use trail Availability of sport and Time spent per week on Respondents with poor proximity to recreation facilities (5-pt sports participation sports facilities significantly more likely to report almost no sports scale) (almost none vs. 1+ hours) participation (OR = 1.23) Parks or Recreation Variable(s)3 TABLE 1 Articles Reporting Empirical Associations between Parks and Recreation Amenities and Physical Activity (Continued) Downloaded By: [University of Washington] At: 23:14 14 March 2008 337 40+ year old women across U.S. 18–96 year olds in a rural U.S. southeastern county 48. Wilcox et al. (2000) 49. Wilson et al. (2004) 1194∗ 2338 Easy access to walking Sedentary (no sports or Easy access to exercise facilities not trails, swimming pools, exercise or activities that significantly related to being sedentary in either urban (OR = recreation centers, or increased heart rate in bicycle paths (single past two weeks) .96) or rural (OR = 1.09) women item—present/absent) Meets PA recommendation Significantly greater odds of Walking or bicycling trails: respondent uses (5+ days with 30+ meeting PA recommendation for minutes of moderate PA low socio-economic status (SES) trails, does not use trails, or 3+ days with 20+ respondents who use trails (OR = no trails reported within 10 miles or 20- minute minutes of vigorous PA 2.81), but no association for high in past week) SES drive) Walk 30+ minutes for 5+ Significantly greater odds of Parks: respondent uses parks, does not use days per week walking 150+ minutes per week for low socio-economic status parks, no parks reported within 10 miles ore (SES) respondents who use trails 20-minute drive) (OR = 3.04) and significantly lower odds of walking for high SES respondents who do not use parks (OR = .44) (Continued on next page) Downloaded By: [University of Washington] At: 23:14 14 March 2008 338 18+ year olds in 34 U.S. cities Population1 n/a∗ N2 Parkland acreage as a percentage of total city acreage Parks or Recreation Variable(s)3 Association(s)4 Parkland acreage significantly Utilitarian walking/bicycling correlated with utilitarian walking and bicycling rate prevalence rate (walking or biking for transport in Parkland acreage not significantly past week) correlated with recreational walking and bicycling rate Recreational walking/bicycling prevalence rate (walking or biking one of top two most frequent physical activities in past month) Physical Activity Variable(s)3 1 Only the sample age and location (where available) are reported here. For additional information about the sample and research design, readers are directed to the original studies. 2 An asterisk adjacent to the sample size number indicates that the sample was drawn in a manner so as to be representative of the study population (e.g. randomly). 3 Although other variables related to parks or recreation and/or physical activity may have been collected or analyzed (or other values of the variables that are presented), only the parks and recreation or physical activity variables/values that were related directly and empirically are reported in these columns. Variables in italics were assessed using some objective method of measurement (e.g., geographic information systems, accelerometer, etc.), rather than subjectively by participants’ self-reports. 4 Unless otherwise noted, the term “significantly” implies differences at the .05 level. Other variables that were adjusted or controlled for in the analyses, if any, are not reported here. When variables or variable values are listed in the variable columns but associations amongst them are not reported in this column, they were either absent, insignificant, or both. 50. Zlot and Schmid (2005) Authors and Date TABLE 1 Articles Reporting Empirical Associations between Parks and Recreation Amenities and Physical Activity (Continued) Downloaded By: [University of Washington] At: 23:14 14 March 2008 Downloaded By: [University of Washington] At: 23:14 14 March 2008 Parks, Recreation, and Physical Activity 339 The remaining 20 articles (40%) reported mixed findings, including at least some positive relationships between parks or recreation variables and PA (Addy et al., 2004; Brownson et al., 2000; De Bourdeaudhuij, Sallis, & Saelens, 2003; Eyler et al., 2003; Foster, Hillsdon, & Thorogood, 2004; Gomez et al., 2004; Hoehner et al., 2005; Humpel et al., 2004; Huston et al., 2003; King et al., 2005; King et al., 2003; Li et al., 2005; Reed & Phillips, 2005; Rutt & Coleman, 2005; Sharpe et al., 2004; Timperio et al., 2004; Troped et al., 2003; Wendel-Vos et al., 2004; Wilson et al., 2004; Zlot & Schmid, 2005). In these studies, disparate associations were observed when different classifications of the parks or recreation variables (e.g., type of facility; distance to facility) or PA variables (e.g., transportational vs. recreational purpose; moderate vs. vigorous) were analyzed, or when substituting objective versus subjective measurements of either type of variable altered the relationships. In a few cases, mixed findings were also observed when different age, gender, or socio-economic status categories were analyzed. The following sections describe patterns in the relationships between different types and proximity of parks and recreation variables and PA. Relationships Between Different Types of Parks or Recreation Settings and Physical Activity To begin, we examined relationships between PA and particular types of parks or recreation settings. Unfortunately, approximately one-third of the studies reviewed used parks or recreation variables that represented an aggregate or overall score of participants’ ratings of their access to several recreation facilities (e.g., De Bourdeaudhuij et al., 2003; Mota et al., 2005). In other cases, a single parks or recreation variable was used to analyze the relationship with PA, but the particular setting was unspecified (e.g., Gomez et al., 2004). Consequently, the associations between PA and these indeterminate variables were excluded from the following descriptions. The observed relationships between PA and trails/paths, parks, recreation centers, exercise/fitness facilities, sports fields, golf courses, swimming pools, and living near a coast/lake/beach are described in Table 2 with more detail in the following paragraphs. Table 2 indicates the number of the 50 studies reviewed that included each type of TABLE 2 Associations Between Types of Park or Recreation Settings and Physical Activity Type of setting Trails Parks Open space Recreation centers Exercise facilities Sports facilities Golf courses Swimming pools Lake/beach/coast Total N Positive association1 Mixed associations1 No association1 17 13 7 7 4 3 3 3 3 76,7,10,12,37,44,46 41,6,10,12 516,18−20,32 41,6,12,23 26,12 78,15,28,30,41,43,49 417,30,41,49 150 31,24,29 513,24,29,33,47 136 310,17,30 124 29,42 36,10,29 110 24,20 138 147 21,12 26 1 1 The larger numbers in each cell indicate the number of studies for each type of park or recreation setting that reported a positive, mixed, or non-significant association with physical activity. The superscript numbers in each cell refer to the specific studies as listed in Table 1. Downloaded By: [University of Washington] At: 23:14 14 March 2008 340 A. T. Kaczynski and K. A. Henderson setting, as well as the breakdown of how many reported positive, mixed, or non-significant associations. The superscript numbers listed beside the total for each association category refer to the specific studies on which the total is based, as numbered in Table 1. Several other settings or facilities were mentioned in only one or two studies (e.g., skating rink, bowling green, dance studio, museum/art gallery, playground, gym, tennis court) and are not described here. Trails (or paths) were examined most frequently in the studies reviewed. More than half (n = 17) of the articles that did not use aggregated or nonspecific measures of parks or recreation variables included trails as a potential influence on PA, while 13 looked individually at parks, and 8 employed some total combination of the amount of green or open space within a specified area (Fisher et al., 2004). For trails exclusively, in most of the studies at least some, if not all, of the reported relationships between the trail and PA variables were positive. For example, Troped et al. (2001) concluded that for every quartermile increase in distance to a trail from home, participants were almost half as likely to have used a bike trail in the past month. In a follow-up analysis, Troped et al. (2003) reported that distance to the trail was negatively related to the number of minutes per week spent walking or cycling for transportation, but not to the number of minutes of PA for recreational purposes. Findings from a study of adults in South Carolina (Sharpe et al., 2004) indicated the importance of knowledge and use of outdoor areas (i.e., as opposed to just their presence) for enhancing PA. In this case, meeting the recommended PA level was not associated with participants’ perceptions of the number of available parks, trails, and other outdoor recreation areas in their county, but was significantly related to the number of days they used trails in a typical month and their knowledge of walking/jogging and bicycling routes in the county. Deshpande et al. (2005) and Reed et al. (2004) provided similar results about how use of trails was related to engaging in recommended amounts of PA (e.g., 30 minutes on 5 or more days per week). Finally, Brownson et al. (2000) found that of the 36% of their study respondents in Missouri who reported having access to a trail, 39% of them had used a trail, and 55% had increased their level of walking since starting to use the trail. Increased walking was significantly more common among women and among people using longer trails (i.e., greater than one-quarter mile) but was unrelated to the distance from trail access. Several other correlational studies provided supportive results about the importance of trails (Booth et al., 2000; Brownson et al., 2001; Chad et al., 2005; Eyler et al., 2003; Huston et al., 2003; King et al., 2003; Vernez-Moudon et al., 2005; Wilson et al., 2004), while only a few other studies documented non-significant findings (Addy et al., 2004; Hoehner et al., 2005; King et al., 2005). The relationship between parks and PA was examined in about one-third (n = 13) of the articles that reported distinct associations between PRSs and PA. For example, Lund (2003) featured parks as a key variable in testing the New Urbanism hypothesis “that placing amenities within walking distance of homes will increase pedestrian travel and social interaction among neighborhood residents” (p. 414). Eight neighborhoods in Portland were purposefully selected based on their differing levels of access to parks and shopping areas. Compared to individuals in the control group of neighborhoods that lacked access (i.e., within one-quarter mile) to either parks or shopping areas, participants with access to only parks had taken a similar number of both “strolling” and “destination” trips in the past week. However, shopping areas appeared to have some influence on purposeful PA in that individuals in neighborhoods with both retail and park access or just retail access had a higher number of destination trips than people in neighborhoods with access to just parks or to neither feature. In another study with similar results, distance to the nearest parkland was not related to participants engaging in any recreational walking in the past week. Those individuals with parkland beyond 600 meters from their homes were actually significantly Downloaded By: [University of Washington] At: 23:14 14 March 2008 Parks, Recreation, and Physical Activity 341 more likely to achieve recommended PA levels than people who lived closer to parkland (Duncan & Mummery, 2005). Mixed or non-significant findings about the influence of parks on PA were found in several other articles as well (Foster et al., 2004; Hoehner et al., 2005; King et al., 2005; Wendel-Vos et al., 2004). Nevertheless, in other studies parks were found to be one of the only variables that remained associated with achieving sufficient activity levels when multivariate models were examined (Addy et al., 2004; Booth et al., 2000). Deshpande et al. (2005) reported that respondents who had used parks in the past month were more than 4 times more likely to have engaged in PA at least 5 times per week for more than 30 minutes per episode. Several other studies reviewed also showed positive associations between parks and assorted PA variables (Chad et al., 2005; King et al., 2003; Sharpe et al., 2004; Wilson et al., 2004). In addition to the articles that examined trails and parks, seven studies looked more generally at open space within a particular area and its relationship to PA. Giles-Corti and colleagues published several papers that used models involving the distance to, size, and attractiveness of public open space (Giles-Corti et al., 2005; Giles-Corti & Donovan, 2002a, 2003). All of these articles generally reported that residents in Australia with greater access to open space reported higher levels of PA. Among older adults in Portland, an overall measure of walking activity within the neighborhood was significantly associated with the absolute number of parks, paths, and trails per neighborhood acre (Fisher et al., 2004) and with the total acreage of green and open space in the neighborhood (Li et al., 2005). Similarly, Zlot and Schmid (2005) examined parkland acreage as a percentage of total acreage in the 55 most populated cities in the U.S. (as taken from Harnik, 2003) and found a strong correlation with the rate of walking and biking for transportation but a nonsignificant relationship with recreational walking and bicycling. Finally, in a somewhat contradictory finding, Plaut (2005) analyzed data from the 2001 American Housing Survey and stated that a relatively equal proportion of people who traveled to work on foot (36.3%), by car (37.1%), and by bicycle (28.9%) reported living within a half block of a green area. Recreation centers (or facilities) were examined in seven articles. Three studies reported positive relationships with participants achieving recommended PA levels (Addy et al., 2004; Booth et al., 2000; Deshpande et al., 2005), while three showed nonsignificant associations with various activity outcomes (Chad et al., 2005; Foster et al., 2004; King et al., 2003). In the remaining study, Gordon-Larsen et al. (2000) analyzed data from almost 18,000 middle and high-school students who participated in the U.S. National Longitudinal Study of Adolescent Health. They found that use of a neighborhood recreation center was associated with a 75% increase in adolescents falling into the highest category of PA (i.e., five or more episodes per week). Interestingly, not using a recreation center was unrelated to greater levels of time spent engaged in television/video watching and video game playing. Four articles discretely examined relationships between exercise facilities and PA. In two studies of differing age groups, access to a local exercise hall and level of health club use were significantly associated with being classified as sufficiently active (Booth et al., 2000; Deshpande et al., 2005). Different proximity measures for exercise facilities were also positively related to particular PA variables in the articles by Reed and Philips (2005) and Deshpande et al. However, in the only other study to individually examine this type of amenity, having a fitness facility within a five-minute walk of home showed no association with achieving the recommended level of PA during leisure time (Hoehner et al., 2005). Three research teams examined the relationship between PA and sports facilities (or grounds or venues). Both Carver et al. (2005) and Timperio et al. (2004) asked parents of 12–14 year olds and 5–6 year olds, respectively, to rate the presence of sports facilities in their neighborhood or local area on a five-point scale. In the latter study, parents’ ratings were unrelated to the 5–6 year olds walking or bicycling to get to places at least three times Downloaded By: [University of Washington] At: 23:14 14 March 2008 342 A. T. Kaczynski and K. A. Henderson per week. However, in Carver et al.’s study, sports facilities were a significant predictor of the frequency of cycling for transport among 12–14 year old boys but were unrelated to walking or bicycling for exercise, recreation, or to get to and from school for either boys or girls. In Wendel-Vos et al.’s (2004) study of adults in the Netherlands, the area dedicated to sports grounds within 300 meters of participants’ homes was significantly associated with bicycling for both leisure and commuting purposes. Three studies examined golf courses with all three showing positive and significant associations with PA. Interestingly, all three studies were conducted with participants ages 50 years and older. In two of the studies, golf courses were just one of several facilities exhibiting positive associations with PA (Booth et al., 2000; Chad et al., 2005), but in the other study golf courses were the only setting significantly associated with a greater number of pedometer-measured steps per day (King et al., 2005). Swimming pools were included in three of the articles reviewed. Engaging in PA for 30 or more minutes on at least five days per week was not significantly associated with the number of days respondents had used a community swimming pool in the past month (Deshpande et al., 2005) or with having a swimming pool within 10 miles or a 20-minute drive (Addy et al., 2004). However, in the third study, swimming pools were one of several facilities significantly related to higher PA scores among a sample of Canadian adults 50 years of age and older (Chad et al., 2005). Finally, access to a coast or lake or beach generally had a positive impact on PA. Across the three studies that examined these features, significant associations were observed with being less likely to be sedentary and more likely to be adequately active and vigorously active (Bauman et al., 1999), with spending more minutes walking in the neighborhood for exercise and for pleasure (Humpel et al., 2004), and with engaging in any vigorous exercise, any walking for recreation, and exercising vigorously at recommended levels (Giles-Corti & Donovan, 2002a). Relationships between Proximity of Parks or Recreation Settings and Physical Activity Almost all studies included some form of spatial referent when investigating how features of the surrounding environment were associated with PA. For example, participants were asked to indicate opportunities that were found in their “neighborhood” or within “walking distance.” As Table 1 illustrated, a wide range of spatial definitions were employed in relation to the availability of PRSs. A small minority of studies employed specific distance or time referents (e.g., 500 meters, 5-minute walk). Even fewer used continuous measures for the parks or recreation variables studied (e.g., street network distance to a facility), although these improved the specificity of the relationships with PA that could be observed. Most of the studies, however, used a categorical proximity referent that was either quantitative (e.g., five-minute walk) or qualitative (e.g., “close by”). Table 3 lists the wide range of proximity categories and the number of studies (and corresponding reference numbers from Table 1) in which each distance referent was found to have either a positive, mixed, or nonsignificant association with PA. Only a small number of studies included specific distance or time referents. WendelVos et al. (2004) used GIS data to ascertain the presence of several PRSs within 300 meters and 500 meters of each participant’s home. In their study, none of the facilities beyond 300 meters were significant predictors of either walking or bicycling for leisure or commuting purposes. However, having sports grounds within 300 meters was associated with increased bicycling for both leisure and commuting, while parks within 300 meters were associated with only increased bicycle commuting. Hoehner et al. (2005) found that objective assessments of the facilities within 400 meters of the respondents’ homes were unrelated to Downloaded By: [University of Washington] At: 23:14 14 March 2008 Parks, Recreation, and Physical Activity 343 TABLE 3 Associations Between Proximity to Parks or Recreation Settings and Physical Activity Proximity category Specific distance referent Specific time referent Within walking distance In neighborhood; close by In community Access to Continuous distance measure Total N Positive association1 4 6 5 12 4 3 7 232,47 210,12 13 55,23,31,34,46 137 26,7 244,46 Mixed associations1 1,24 2 417,26,29,30 328,32,42 21,49 422,38,40,43 No association1 213,24 22,11 49,14,33,36 140 148 135 1 The larger numbers in each cell indicate the number of studies for each proximity category that reported a positive, mixed, or non-significant association with physical activity. The smaller numbers in each cell refer to the specific studies as listed in Table 1. meeting PA recommendations during recreational pursuits. As described previously, Duncan and Mummery (2005) dichotomized the distance from participants’ homes to the nearest parkland into greater and less than 600 meters. In their Australian sample, parkland proximity was not related to engagement in recreational walking, and those individuals with parkland beyond 600 meters were actually more likely to achieve recommended PA levels. Finally, the total acres of recreational open space within a half-mile (i.e., 800 meters) of participants’ homes was significantly related to neighborhood walking activity for a sample of older adults in Portland (Li, Fisher, Brownson & Bosworth, 2005). With respect to time, De Bourdeaudhuij et al. (2003), Atkinson et al. (2005), and Chad et al. (2005) all asked participants to estimate whether numerous park or recreation facilities were within a five-minute drive. The latter two studies also included the concurrent referents of a 10-minute walk and a 5-minute walk, respectively, while the former two also included facilities on a frequently traveled route. In two of these studies (De Bourdeaudhuij et al., Atkinson et al.), the majority of the relationships with the PA variables studied were not significant, while the other study (Chad et al.) reported almost all positive associations. In addition to the objective measures described previously, Hoehner et al. (2005) inquired about participants’ perceptions of amenities within a 5-minute walk of their home. Addy et al. (2004) used a 10-minute walk criterion while adding the extra referent of 0.5 miles. Both studies reported some positive and some inconclusive findings about the importance of different PRSs for PA participation. Finally, Deshpande et al. (2005) found that shorter walking times (as reported by participants as a continuous variable) to most park or recreation facilities translated into more regular PA. Some studies asked more generally about facilities within walking distance. For example, Ball et al. (2001) found that Australians’ overall perception of having shops, a park or beach, and/or cycle path within walking distance was significantly related to increases in walking for exercise. Humpel et al. (2004) reported that having a lake or beach within walking distance was associated with increased time spent walking for a variety of purposes, although most of the latter associations disappeared in more complex multivariate models. In two separate studies that provided additional descriptors to guide respondents, King et al. (2005) defined walking distance as 1500 meters from home, while King et al. (2003) defined it as a 20-minute walk from home. In the former investigation, achieving a significantly greater number of steps per day on a pedometer was influenced by a golf course, but not a park, trail, or museum. In the 2003 study, the same PA variable was positively associated Downloaded By: [University of Washington] At: 23:14 14 March 2008 344 A. T. Kaczynski and K. A. Henderson with having a park or trail within walking distance but not a community center. Finally, Foster et al.’s (2004) study of adults in England showed mixed results for walking with respect to having a park or leisure center within walking distance. The largest group of studies used similar terms such as “close by,” “near where I live,” or “neighborhood” to guide respondents’ thinking about PRSs. A small number also included additional referents such as “within a half block” or “that I can get to easily.” In almost half of these investigations, the associations between the PRS and the PA variables studied were mainly positive and significant (Blanchard et al., 2005; Gordon-Larsen et al., 2000; Li, Fisher, & Brownson, 2005; Mota et al., 2005; Vernez-Moudon et al., 2005). For example, Mota et al. asked 1123 middle and high school students to rate on a 4-point scale their level of agreement with the statement, “My neighborhood has several public recreation facilities, such as parks, walking trails, bike paths, recreation centers, playgrounds, public swimming pools, etc.” The PA variable in their study consisted of five questions, each with four response choices, about sports and PA participation outside school. Participants were divided into active and nonactive groups using the midpoint of the scale and a significantly greater percentage of active than non-active students agreed with the presence of the parks and recreation facilities in their neighborhood. However, several other studies investigating “nearby” or “neighborhood” facilities reported mixed (Huston et al., 2003; Li et al., 2005; Timperio et al., 2004) or mostly nonsignificant or negative (Carver et al., 2005; Duncan et al., 2004; Lund, 2003; Plaut, 2005) findings about the relationship between PRSs and PA. Some researchers employed distance or time referents that were more reflective of community park and recreation settings. Reed et al. (2004) and Wilson et al. (2004) both found generally positive associations with PA participation for people who used trails that were within 10 miles or a 20-minute drive of home. Some similar results were found for parks within the same reference area (Addy et al., 2004; Wilson et al., 2004). However, Rutt and Coleman (2005) counted the total number of parks, gyms, schools, and walking/biking paths within 2.5 miles of participants’ homes and found this figure was unrelated to the number of minutes per week their study participants spent engaged in light, moderate, or vigorous activities. A few studies simply asked about participants’ “access to” various parks or recreation amenities (Booth et al., 2000; Brownson et al., 2001; Wilcox et al., 2000). For example, in a survey of women 40 years or older across the U.S., Wilcox et al. found that the presence or absence of easy access to a set of amenities (e.g., walking trails, swimming pools, recreation centers, or bicycle paths) was unrelated to engagement in no sports or exercise activities in the past week for either urban or rural respondents. In contrast, Booth et al. reported that having access to almost all of the park or recreation facilities they studied was associated with being classified as active for older Australian adults when each facility was examined individually. Brownson et al.’s telephone survey of adults across the U.S. showed that having access to trails, parks, and indoor gyms were each associated with meeting PA recommendations. Finally, some studies used distance measures that were either continuous or included several ordered response categories (e.g., one-quarter mile, one-half mile, three-quarter miles, etc.) that improved their specificity. Studies by Troped et al. (2001, 2003) using these types of measures found positive associations between distance to a paved rail-trail and both use of the trail and number of minutes spent walking or cycling for transportation. Vernez-Moudon et al. (2005) also reported positive associations with distance to a rail-trail in an examination of cycling. Other researchers that used continuous distance measures also discovered positive associations. Gomez et al. (2004) found that for the grade 7 boys (but not girls) in their San Antonio sample, straight line distance from home to the nearest Downloaded By: [University of Washington] At: 23:14 14 March 2008 Parks, Recreation, and Physical Activity 345 open play area was significantly associated with their number of outdoor bouts of PA per week. Street distance to various indoor and outdoor facilities was related to minutes per week of vigorous PA but not to light or moderate PA for a sample of adults in El Paso (Rutt & Coleman, 2005). Further, Reed and Phillips (2005) calculated the average distance from university students’ places of residence to the exercise facilities they used over the course of a week. This measure was related to intensity and duration of use among females and to frequency of use for males. Finally, in Norman et al.’s (2005) study of 11–15 year old boys in San Diego, participants indicated the time it would take to walk to each of five recreation facilities on a five-point scale ranging from 1–5 minutes to 31 or more minutes. The aggregated “recreation in the neighborhood” score was not significantly related to the total amount of time the boys spent engaged in several sedentary activities over the course of a nonschool day. Discussion The purpose of this study was to review evidence related to PRSs as features of the built environment and the relationship these settings had to PA. The degree to which parks and recreation as part of the built environment contributed to PA and healthier communities was generally evident. Results concerning the types of PRSs and PA were mixed, but trails, parks, open spaces, golf courses, and natural settings were more likely to be associated with PA than recreation centers, exercise facilities, and sports facilities. Drawing conclusions about the importance of proximity to PRSs was difficult because of the mixed results and the wide variety of descriptors used to measure access and proximity. However, for all of the proximity categories, substantially more positive or mixed associations were observed than nonsignificant relationships. Further, almost all studies using continuous distance measures reported that increased proximity to PRSs was associated in some way with increased PA. Overall, this review provided some evidence about the contribution that parks or recreation make to PA, but the findings are generally inconclusive. The review, however, raised a number of questions that should be answered with further research regarding PRSs and PA. Sallis, Owen, and Fotheringham (2000) proposed a five-phase framework to classify stages of research in behavioral epidemiology: 1. 2. 3. 4. 5. establish links between the behavior (e.g., park-based PA) and health, develop measures of the behavior, identify influences on the behavior (e.g., proximity to park), evaluate interventions to change the behavior, and translate research into practice. Few of the studies we reviewed fell into the latter stages, which would suggest a lack of maturity in research investigating the relationship of parks and recreation with PA (Sallis et al., 2000). Most of the studies we reviewed rudimentarily could be classified into phase three, while few articles uncovered in our broader searches addressed parks or recreation measurement, interventions, or implementation as they related to promoting PA. With approximately 80% of the articles showing some significant relationships, PRSs and PA appeared to share some positive association. However, such generalized conclusions also must be drawn with caution for several reasons. Only 8 of the 50 studies reviewed involved participants younger than 18 years (Carver et al., 2005; Duncan et al., 2004; Gomez et al., 2004; Gordon-Larsen et al., 2000; Mota et al., 2005; Norman et al., 2005; Romero, 2005; Timperio et al., 2004), and seven out of these eight studies showed either nonsignificant or mixed findings. Therefore, the strength of the association between parks or recreation and PA for nonadult samples appears somewhat more attenuated. Additionally, Downloaded By: [University of Washington] At: 23:14 14 March 2008 346 A. T. Kaczynski and K. A. Henderson less than one-fifth of the studies reported findings disaggregated by gender (Carver et al., 2005; De Bourdeaudhuij et al., 2003; Foster et al., 2004; Gomez et al., 2004; Humpel et al., 2004; Humpel, Owen, Iverson, et al., 2004; Humpel, Owen, Leslie, et al., 2004; Reed & Phillips, 2005), despite female rates of PA participation, especially in youth, being lower than males (Caspersen, Pereira, & Curran, 2000). In about half of these studies, the association between PRSs and PA was different based on gender. Complex relationships may exist for other population sub-groups as well (e.g., races, income levels). Similar to what Sallis et al. (2006) concluded, most of the active living research related to parks and recreation to date has involved middle class, mostly white adults living in urban and suburban settings. The studies reviewed employed diverse operationalizations of both parks or recreation and PA. For example, proximity definitions (e.g., within neighborhood, walking distance) ranged from 400 m to 1500 m or 5 minutes to 20 minutes, while many studies left it up to the respondent to define terms like “access/availability” or “neighborhood/near my home.” Similar diversity was evident in the PA variables employed. In addition, as with any regression-type analyses such as the frequent use of odds ratios, controlling for or including different variables changes the impact of the predictor variables on the outcome measures. Some studies listed the variables that were included in the model at different steps of the analysis, but other authors either elected not to control for covariates or failed to report this stage in their narratives. Another aspect notably missing from this research review was a corpus of qualitative studies. We noted that a handful of studies were examined (Hesketh et al., 2005; Thompson et al., 2002; Thomson, Kearns, & Petticrew, 2003). Almost all of the details of PRSs were lacking. For example, in a qualitative study about perceptions of parents and children regarding healthy eating, activity, and obesity, Hesketh et al. found that parents thought the local environment including playgrounds, bike tracks, and sporting facilities helped encourage children to be physically active. The parents noted that their children “frequently used the available facilities but expressed a need for a greater number and variety of facilities, particularly in light of the decreasing size of backyards” (p. 23). Although this qualitative information is useful, it provides little specificity. Similarly, the American Indian women in Thompson et al.’s study described the lack of access to affordable and convenient facilities but provided limited descriptions about the operation of those facilities or the proximity needed. The value of qualitative studies in the future may be in the potential to elicit more meaningful descriptions that can be used to design and provide public park and recreation programs and amenities. Finally, almost all of the studies reviewed were cross-sectional. Therefore, inferring causality or the direction of the relationship was nearly impossible, even when one variable (e.g., proximity of a park) was treated as the independent or predictor variable by the original researchers. Nevertheless, cross-sectional studies are important for expediently identifying factors that might be targeted to improve PA in future controlled or community intervention studies (Sallis & Owen, 1999). The Dearth of Detail Several reasons may exist for the dearth of detail about parks and recreation. First, almost all the articles reviewed appeared in journals that have not typically had recreation and leisure as a focus (e.g., American Journal of Public Health, American Journal of Preventive Medicine, American Journal of Health Promotion). Further, few of the authors had parks and recreation as part of their background. Therefore, the nuances and detail of park and recreation environments often were not described adequately. More researchers with background in parks, recreation, and leisure should be contributing to this literature. For Downloaded By: [University of Washington] At: 23:14 14 March 2008 Parks, Recreation, and Physical Activity 347 historical reasons, however, some recreation and leisure scholars (Henderson et al., 2001) have tried to differentiate the field from sport and physical education by suggesting that recreation offers broader benefits to individuals. Although recreation professionals believe that recreation involves more than physical endeavors, perhaps leisure scholars should focus again and more intentionally on physical benefits by using both subjective and objective approaches. A second reason why the literature about parks and recreation has not been detailed may be that tools for measuring park and recreation amenities relative to PA have not been readily available. Although recreation and leisure scholars (Moore & Shafer, 2001; Shafer, Lee, & Turner, 2000) have studied trails, greenways, and parks, the focus has been on physical health as only one dimension among many benefits from recreation participation. Few instruments have been developed to examine specific amenities of parks and recreation that might affect PA directly. Researchers such as Bedimo-Rung, Gustat, Tompkins, Rice, and Thomson (2006), Troped et al. (2006), and Saelens et al. (2006) have begun to isolate the specific aspects of parks and trails that may contribute to PA promotion, but these tools are relatively new. Third, a lack of transdisciplinary research that examines the context of PRSs within neighborhoods and communities is obvious. The Transportation Review Board (TRB, 2005) published a report identifying aspects of the built community that enhance and promote PA. The report concluded that the research from several disciplines (e.g., public health, urban planning, parks and recreation) about the environmental determinants of PA is limited. TRB recommended more interdisciplinary approaches, more complete conceptual models, and a more detailed examination of the specific characteristics of the built environment and different types of PA. Similarly, Srinivasan, O’Fallon, and Dearry (2003) noted that many communities do not understand the health consequences of environmental factors and have focused only on adverse health effects. They advocated for multidisciplinary research on positive health impacts of the built environment within planned communities. Finally, another reason studies about the built environment and PA have not elicited detail about the park and recreation structures may be that in addition to transdisciplinary research that cuts across a number of fields, community-based research to improve public health is necessary (Israel et al., 1998). A fundamental characteristic of this needed research may include an emphasis on the participation and influence of nonacademic researchers in the process of creating a knowledge base (Henderson & Bialeschki, 2005). Practitioners in parks and recreation have an important role to play in addressing the specifics of how built environments can promote PA. More depth of inquiry about the settings and amenities is needed. For example, Payne (2002) called for more research on the reciprocal relationships between leisure and health, including issues related not only to the design of areas and facilities, but also leadership, equipment, aesthetics, and participant developmental abilities. Conclusion The future for examining parks and recreation as features of the built environment that enhance PA appears boundless. Until now, the tools and methods for studying parks and recreation within the built environment have been limited. Further, collaborations and partnerships have been lacking. Nevertheless, leisure scholars as well as all other related disciplinary scholars can contribute a variety of approaches and strategies to promote this line of study. For example, case studies could be helpful in examining the processes that occur in designing PRSs and promoting their use for PA. Policy research relative to how parks and recreation is funded and how these settings and amenities fit into a broader community Downloaded By: [University of Washington] At: 23:14 14 March 2008 348 A. T. Kaczynski and K. A. Henderson plan would be useful. Similarly, longitudinal studies might be valuable in examining the use of facilities over time (e.g., family patterns). The complexity of conducting research, however, may be minor compared with the challenges of implementing interventions (Sallis et al., 2006). The interesting aspect of this dilemma is that parks and recreation providers have been concerned with PA as one important dimension of their work for more than 100 years. However, as is true with most types of previous public health interventions, the focus has been on the individual and not on the park and recreation policies. These attempts to support and invest in parks and recreation will require public support and political advocacy. 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