Masters Theses

Date of Award

12-1992

Degree Type

Thesis

Degree Name

Master of Science

Major

Human Performance and Sport Studies

Major Professor

Edward T. Howley

Committee Members

David Bassett, Jean Lewis

Abstract

When dealing with exercise and its effect on resting metabolic rate, researchers have been concerned mainly with endurance training. It would be interesting, however, to see how different types of training affect this variable. For example, how does an anaerobic activity such as resistance training influence a person's resting metabolism? Does it cause adaptations within the muscle such that the RMR (kcal• kg LBM-1• hr-1) is higher than it is in runners? The purpose of this study was to answer that question. A cross-sectional study was conducted on twenty-four apparently healthy, non smoking males between the ages of 18-30 years. These individuals were placed into one of three different groups, sedentary, endurance trained or resistance trained. All subjects were instructed to report to the laboratory at 6:00 a.m., after 12 hours of fasting and 36 hours of inactivity. Upon arrival, resting metabolic rate, residual volume and body composition measurements were obtained. Each measurement was made on two separate occasions in order to show reproducibility in the data. Based on the correlation coefficients of these three variables (r= 0.88, r= 0.99 and r= 0.99), there appeared to be good reproducibility between the values of Trial 1 and Trial 2. A one-way ANOVA showed that the RMRs (kcal• kg LBM-1• hr-1) of sedentary people (1.32 ± 0.15) were significantly higher than those of endurance trained individuals (1.17 ± 0.11) and resistance trained individuals (1.15 ± 0.07). No significant difference was found to exist, however, between the latter two groups. Apparently, the two types of training had similar effects on resting metabolism (kcal• kg LBM-1• hr-1).

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