HERMAN, C. W., P. R. NAGELKIRK, J. M. PIVARNIK, and C. J. WOMACK. Regulating Oxygen Uptake during High-Intensity Exercise Using Heart Rate and Rating of Perceived Exertion. Med. Sci. Sports Exerc., Vol. 35, No. 10, pp. 1751–1754, 2003.
The purpose of this study was to comparatively evaluate the use of heart rate (HR) or rating of perceived exertion (RPE) in eliminating the slow component of oxygen uptake (V̇O2) during high-intensity aerobic exercise.
Nine sedentary males (age = 23.9 ± 4.6 yr, height = 177.4 ± 10.1 cm, weight = 75.28 ± 12.95 kg) completed three 15-min submaximal exercise cycle ergometer tests based on: 1) constant power output (PO) corresponding to 75% V̇O2max (PO75), 2) HR corresponding with 75% V̇O2max (HR75), and 3) RPE response corresponding with 75% V̇O2max (RPE75). V̇O2, HR, RPE, and blood lactate concentration [La−] were measured during all tests. Data were analyzed using repeated measures analysis of variance, and post hoc means comparisons were performed using a Fisher’s LSD test.
End-exercise V̇O2 was significantly higher than the respective 3-min V̇O2 for the PO75 and RPE75 tests, but not the HR75 test. End-exercise V̇O2 was significantly greater for the PO75 test than both the RPE75 and HR75 tests, but there was no significant difference between end-exercise V̇O2 for the RPE75 and HR75 tests. End-exercise HR and RPE were significantly higher for the PO75 test than both the RPE75 and HR75 tests. There were no significant differences between the RPE75 and HR75 tests for end-exercise HR or end-exercise RPE.
Results suggest using both HR and RPE are effective at reducing the slow component of V̇O2 that occurs during high-intensity exercise.
Human Energy Research Laboratory, Department of Kinesiology, Michigan State University, East Lansing, MI
Address for correspondence: Christopher J. Womack, Ph.D., FACSM, 3 IM Sports Circle, Michigan State University, East Lansing, MI 48824; E-mail: email@example.com.
Submitted for publication March 2003.
Accepted for publication June 2003.