The effect of different interval durations on measures of exercise intensity
HROVATIN, Lauri A.
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Monitoring training loads during continuous exercise has been validated, however given the importance of interval training, this method (RPE * duration) has not been validated during interval training of different durations. Twelve well trained individuals (m = 6, f = 6) performed an incremental cycle ergometer test to failure and four randomly ordered 30 min tests on a Icde cycle. The four tests were steady state, 30-sec. I-min, and 2-min. with a work relief ratio of 1:1. Workloads were calculated according to the individual anaerobic thresliold (IAT) and physiological variables (HR, RPE, BLa, and VO2) were measured every 10-min. RPE was also acquired 30-min after the exercise bout and multiplied by the duration to obtain a session RPE score. Heart rate data were collected from a Polar Heart Rate Monitor and a summated HR score was calculated. All of the physiological variables behaved similarly during interval training and steady state training by rising from rest to 10-min and then leveling off. The session RPE score and summatcd HR score were compared and found to be closely related suggesting that the summated I-IR score and session RPE are essentially the same. In conclusion, the session I<PE * duration provides a reliable method to rate the intensity of interval training.
Exercise - Physiological aspects
Cycling - Physiological aspects