Term of Award

Spring 1996

Degree Name

Master of Science with Major in Exercise Science

Document Type and Release Option

Thesis (restricted to Georgia Southern)

Department

Department of Kinesiology

Committee Chair

James L. McMillan

Committee Member 1

W. Kent Guion

Committee Member 2

A. Barry Joyner

Abstract

Total body mass is a known influencer of individual metabolic rates. The fat component of total body mass is described to be inversely proportionate to exercise performance. To determine the relationship that percent fat mass (%BF) has on submaximal work, 19 (10 males and 9 females) ranging from 20 to 27 years old (22.8 ± 1.9) students of Georgia Southern University agreed to participate in two exercise sessions consisting of the Fastrack® skier and treadmill at two submaximal steady state work rates for three minutes. Work rates were maintained at heart rates of 110 and 130 bpm. Minute oxygen uptake (VO2,) was measured in 30 sec intervals throughout each session. Percent body fat was determined using bioelectrical impedance. Mean VO2, was calculated for each subject at each condition and compared to %BF using the Pearson product moment coefficient of correlation (r). The overall results showed a moderate and negative relationship between VO2, and %BF (r = -.64, p = 0.003 and r = -.61, p = 0.005) at each intensity (110 bpm and 130 bpm, respectively). Further analysis revealed that r was similar between exercise modes, genders, and intensity (p > 0.05). Analysis of the body composition to work relationship using r produced a quantitative result that appears to appropriately describe this relationship.

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