Date of Award:

5-1996

Document Type:

Thesis

Degree Name:

Master of Science (MS)

Department:

Kinesiology and Health Science

Department name when degree awarded

Health, Physical Education, and Recreation

Committee Chair(s)

Lanny J. Nalder

Committee

Lanny J. Nalder

Committee

Rolayne WIlson

Committee

LeGrande C. Ellis

Abstract

The purpose of this study was to determine the effects of nonmotorized treadmill walking and motorized treadmill walking on VO2 results, measured in ml•kg-1•min-1, of males and females, ages 20-30 at Utah State University, Logan, Utah, USA. The participants were required to walk at a pace of 3 miles per hour and 13% grade for a total exercise time of 9 minutes. The exercise time was broken up with 3-minute recovery periods. Oxygen uptake was measured continuously using a metabolic measurement cart. The data obtained from the metabolic cart were correlated for each treadmill to determine the degree of relationship.

A t test for correlated means was used to determine if there was a significant difference, alpha < 0.05, when measuring VO2 and metabolic (MET) results. A significantly low correlational coefficient was found when the Proform Dual Motion Crosswalk Cross Trainer motorized treadmill (CW TM) VO2 and MET results were compared with the Jane Fonda nonmotorized treadmill (Jane TM) and Voit 502 MD nonmotorized treadmill (Voit TM) VO2 and MET results (r = 0.3, p < 0.0001). These results enabled the researchers to reject the null hypotheses, which stated there would be no significant difference and a high positive correlation between nonmotorized and motorized treadmill VO2 and MET results. Standard mean difference effect sizes were calculated for the nonmotorized treadmills versus the motorized treadmill. An effect size of 1.62 was found when both nonmotorized treadmills were compared with the motorized treadmill. This, combined with the significant difference, p < 0.0001 , provided confidence that a Type I error was avoided. Therefore, the results of this research study show a significant difference in VO2 and METs measured on a nonmotorized treadmill when compared with a motorized treadmill.

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