Date of Award:

12-2008

Document Type:

Thesis

Degree Name:

Master of Science (MS)

Department:

Health, Physical Education, and Recreation

Committee Chair(s)

Edward Heath

Committee

Edward Heath

Committee

Dale R. Wagner

Committee

John M. Kras

Abstract

The purpose of this study was to determine whether there is a significant difference between measured values of thoracic gas volume (MTGV) and predicted values of thoracic gas volume (PTGV) using the Bod Pod®. One hundred and thirteen college freshmen, both males and females, were tested using the Bod Pod® by first measuring thoracic gas volume with the Bod Pod® technique, then by using pre-determined values based on height, weight, and age that predict thoracic gas volume. Results of a paired t test showed that measured thoracic gas volume and predicted thoracic gas volume were significantly different. A Pearson’s product-moment correlation coefficient was calculated to be r = .60 which is significant at the p ≤ .05 level. A Bland and Altman plot was used to reveal any variability about the mean for individual participants MTGV and PTGV and the averages of each. A Pearson’s product-moment correlation coefficient was calculated for the data in the Bland and Altman plot. The correlation was calculated as .56, which is significant at the p ≤ .001 level. It was concluded that within the limitations of this study, there is a significant difference between MTGV and PTGV when using the Bod Pod® air displacement plethysmography system.

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