TY - JOUR
T1 - Regulating intensity using perceived exertion
T2 - Effect of exercise duration
AU - Kang, Jie
AU - Chaloupka, Edward C.
AU - Biren, Gregory B.
AU - Mastrangelo, M. Alysia
AU - Hoffman, Jay R.
PY - 2009
Y1 - 2009
N2 - To examine whether the validity of perception-based intensity regulation would be affected by exercise duration, 20 subjects were recruited to complete a maximal exercise test (GXT) and four submaximal trials of varying duration and intensity using a cyle ergometer. During GXT, ratings of perceived exertion (RPE), oxygen uptake (VO2), heart rate (HR), and power output (PO) equivalent to 50 and 75% VO2peak were determined. During each trial, subjects were to produce and maintain a workload using RPE estimated at 50 or 75% VO2peak for 20 or 40 min, and VO2, HR, and PO were measured throughout the exercise. No differences in average VO2 were found between the estimation and production trial of either duration. However, average HR and PO were lower (P < 0.05) during the production trial of both durations. It appears that exercise duration has a minimal impact upon the accuracy of using RPE to regulate a target metabolic demand.
AB - To examine whether the validity of perception-based intensity regulation would be affected by exercise duration, 20 subjects were recruited to complete a maximal exercise test (GXT) and four submaximal trials of varying duration and intensity using a cyle ergometer. During GXT, ratings of perceived exertion (RPE), oxygen uptake (VO2), heart rate (HR), and power output (PO) equivalent to 50 and 75% VO2peak were determined. During each trial, subjects were to produce and maintain a workload using RPE estimated at 50 or 75% VO2peak for 20 or 40 min, and VO2, HR, and PO were measured throughout the exercise. No differences in average VO2 were found between the estimation and production trial of either duration. However, average HR and PO were lower (P < 0.05) during the production trial of both durations. It appears that exercise duration has a minimal impact upon the accuracy of using RPE to regulate a target metabolic demand.
KW - Cycle ergometer
KW - Effort sense
KW - Exercise prescription
KW - Heart rate
KW - Oxygen uptake
UR - http://www.scopus.com/inward/record.url?scp=59249089701&partnerID=8YFLogxK
U2 - 10.1007/s00421-008-0922-4
DO - 10.1007/s00421-008-0922-4
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C2 - 19002704
AN - SCOPUS:59249089701
SN - 1439-6319
VL - 105
SP - 445
EP - 451
JO - European Journal of Applied Physiology
JF - European Journal of Applied Physiology
IS - 3
ER -