Responses to preferred intensities of exertion in men differing in activity levels.
We compared ratings of perceived exertion (RPE), state anxiety, percentage of peak oxygen uptake (% VO2peak), percentage of ventilatory threshold (% Tvent), and blood lactate concentration [HLa] in 11 high-active and 12 low-active men (23 +/- 3 yr) at self-selected power outputs during 20 min of cycling. The high-active group selected higher power outputs than did the low-active group, but % VO2peak and % Tvent were lower for the high-active subjects during the initial 5-10 min of cycling. Both groups reported increased RPE across time, but contrary to past studies of load-incremented cycling, RPE was identical for the groups despite their differences in relative intensity. No differences were found for [HLa] or state anxiety during cycling. The groups did not differ on exertional symptoms, but the high-active subjects reported a significant reduction in state anxiety immediately after cycling. A preferred exertion protocol provides an alternative approach to identifying influences on perceived exertion during prolonged exercise. The influence of physical activity history/status on the association between the concomitant pattern of self-selected power outputs and postexercise anxiety reduction merits study.
Dishman
R K
RK
Department of Exercise Science, University of Georgia, Athens 30602.
Farquhar
R P
RP
Cureton
K J
KJ
D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001007:Anxiety / Q000503:physiopathology*; D001290:Attitude; D001642:Bicycling / Q000502:physiology; D016552:Ergometry; D006801:Humans; D006985:Hyperventilation / Q000503:physiopathology; D007773:Lactates / Q000097:blood; D008019:Life Style; D008297:Male; D010101:Oxygen Consumption / Q000502:physiology; D005082:Physical Exertion / Q000502:physiology*; D010809:Physical Fitness; D012129:Respiratory Function Tests
D007773:Lactates