Electronic Supplementary Material: - Table S1. Quality assessment of studies included in the meta-analysis - Figure S1. MEDLINE search strategy - References Table S1. Quality assessment of studies included in the meta-analysis [1] Scale items Kitzman et al. [2], 2013 Ho et al. [3], 2012 McNeilly et al. [4], 2012 Vinet et al. [5], 2011 Waib et al. [6], 2011 Miyaki et al. [7], 2003 Aizawa et al. [8], 2008 Hill et al. [9], 2007 1. Random allocation 1 1 0 0 1 0 0 1 2. Allocation concealed 0 0 0 0 0 0 0 0 3. Baseline similarity 1 1 0 0 1 0 0 1 4. Subject blinding 0 0 0 0 0 0 0 0 5. Therapist blinding 0 0 0 0 0 0 0 0 6. Assessor blinding 1 0 0 0 0 0 0 0 7. Adequate follow-up 1 0 1 1 1 0 1 1 8. ITT analysis 1 1 1 1 1 1 1 0 9. Between-group comparisons 1 1 0 0 1 0 0 1 10. Point measures & variability 1 1 1 1 1 1 1 1 7/10 5/10 3/10 3/10 6/10 2/10 3/10 5/10 Total 1 = yes (scored); 0 = no. ITT, intention-to-treat analysis Figure S1. MEDLINE search strategy “obesity” [All Fields] AND “arterial stiffness” [All Fields] OR “arterial compliance” [All Fields] OR “arterial distensibility” [All Fields] AND “aerobic exercise” [All Fields] OR “physical activity” [All Fields] REFERENCES 1. Maher CG, Sherrington C, Herbert RD, et al. Reliability of the PEDro scale for rating quality of randomized controlled trials. Phys Ther. 2003 Aug;83(8):713-21. 2. Kitzman DW, Brubaker PH, Herrington DM, et al. Effect of Endurance Exercise Training on Endothelial function and Arterial Stiffness in Older Patients with Heart Failure and Preserved Ejection Fraction: A Randomized, Controlled, Single-Blind Trial. J Am Coll Cardiol. 2013 May 8. 3. Ho SS, Radavelli-Bagatini S, Dhaliwal SS, et al. Resistance, aerobic, and combination training on vascular function in overweight and obese adults. J Clin Hypertens (Greenwich). 2012 Dec;14(12):848-54. 4. McNeilly AM, McClean C, Murphy M, et al. Exercise training and impaired glucose tolerance in obese humans. J Sports Sci. 2012;30(8):725-32. 5. Vinet A, Karpoff L, Walther G, et al. Vascular reactivity at rest and during exercise in middle-aged obese men: effects of short-term, low-intensity, exercise training. Int J Obes. 2011;35(6):820-8. 6. Waib PH, Goncalves MI, Barrile SR. Improvements in insulin sensitivity and muscle blood flow in aerobic-trained overweight-obese hypertensive patients are not associated with ambulatory blood pressure. J Clin Hypertens. 2011;13(2):89-96. 7. Miyaki A, Maeda S, Yoshizawa M, et al. Effect of habitual aerobic exercise on body weight and arterial function in overweight and obese men. Am J Cardiol. 2009;104(6):823-8. 8. Aizawa K, Petrella RJ. Acute and chronic impact of dynamic exercise on arterial stiffness in older hypertensives. Open Cardiovasc Med J. 2008;2:3-8. 9. Hill AM, Buckley JD, Murphy KJ, et al. Combining fish-oil supplements with regular aerobic exercise improves body composition and cardiovascular disease risk factors. Am J Clin Nutr. 2007 May;85(5):1267-74.