The effects of aerobic fitness on resting metabolic rate.
A cross-sectional study was designed to determine the relationship between aerobic fitness and resting metabolic rate (RMR) in 69 males exhibiting a wide range of aerobic fitness levels (VO2max = 32.8-78.1 mL.kg-1.min-1). The results of this study indicated that RMR was not significantly different between trained and untrained individuals when expressed in kJ.kg fat-free weight-1.hr-1 or using an ANCOVA with fat-free weight as the covariate and RMR as the dependent variable (F ratio = 0.353, P less than 0.70). In addition, this study also failed to support a previously suggested hypothesis that an elevated RMR may only be observed in those individuals exhibiting both high VO2max values and currently training a minimum of 12-16 h/wk. Thus, the results of this study strongly suggest that RMR is independent of both a person's current aerobic level and training status.
Broeder
C E
CE
Department of Kinesiology and Health Education, University of Texas, Austin.
Burrhus
K A
KA
Svanevik
L S
LS
Wilmore
J H
JH
D000293:Adolescent; D000328:Adult; D001481:Basal Metabolism / Q000502:physiology*; D001823:Body Composition; D015992:Body Mass Index; D002149:Energy Intake; D015444:Exercise / Q000502:physiology*; D006339:Heart Rate; D006801:Humans; D008297:Male; D010101:Oxygen Consumption; D010809:Physical Fitness / Q000502:physiology*; D012044:Regression Analysis