HB Physical-00-p.qxd
15/1/13
15:16
Page 47
Pleasure from the exercising body
3.0
Severe
VCO2(L/min)
2.5
2.0
Heavy
1.5
RCP
81%
1.0
Moderate
0.5
VT
48%
0.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
VO2(L/min)
Zone of
Response
Variability
Zone of
Response
Homogeneity
(Displeasure)
Less Pleasure
More Pleasure
Zone of
Response
Homogeneity
(Pleasure)
Moderate
Rest
Heavy
VT
Severe
RCP
VO 2peak
Figure 1.1 Panel (a): The ventilatory threshold (VT) and respiratory compensation point (RCP) represent
distinct changes in the slope of the gas-exchange relationship and demarcate the domains of moderate,
heavy, and severe exercise intensity. In this example, the first change in slope (VT, beginning of the
heavy domain) occurs at 48% and the second change in slope (RCP, beginning of the severe domain)
occurs at 81% of peak oxygen uptake (VO2peak). Panel (b): According to the dual-mode theory
(Ekkekakis, 2003), there is (1) homogeneity of affective responses in the moderate domain, with the
predominant response being pleasure, (2) variability in the heavy domain, with some individuals
reporting increases and others decreases in pleasure, and (3) homogeneity in the severe domain, with the
predominant response being displeasure.
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T&F PRO OFS. NOT FOR DISTRIBUTION.
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