Electronic Theses and Dissertations

Date of Award

2011

Document Type

Dissertation

Degree Name

M.S.E.S. in Exercise Science

Department

Health, Exercise Science, and Recreation Management

First Advisor

Jasper M. Loftin

Second Advisor

Martha Bass

Third Advisor

Dwight E. Waddell

Relational Format

dissertation/thesis

Abstract

An equation recently published by Loftin, et al. (2010) was cross-validated using 30 subjects consisting of 10 normal weight walkers, 10 overweight walkers, and 10 distance runners. Gender was balanced across sub-groups. Participants walked or ran for 5 minutes at their preferred pace. Preferred walking pace was determined by six timed 50-ft trials and preferred running pace by the runner's typical training pace. Energy expenditure (EE) was determined via indirect calorimetry and reported in absolute units (kcal), and corrected to a mile distance. Body composition was assessed via DXA. EE per mile was predicted using the Loftin, et al. (2010) equation. The equation [Kcal = mass (kg) x 0.789 ? gender (men=1, women=2) x 7.634 + 51.109; R2 = 0.632, SEE = 10.9 kcal/mile] yielded a mean of 99.7 ± 10.9 kcal/mile which was significantly different (p < 0.05) than the measured mean of the cross-validation group (107.8 ± 15.5 kcal/mile). However, the mean was within the standard error of the estimate of the original equation. Further analysis included a Chow test which yielded no significant differences between regression coefficients of the original equation and the cross-validation (CV) group [Kcal = mass (kg) x 0.825 ? gender (men=1, women=2) x 1.687 + 47.6; R2 = 0.625, SEE = 9.82 kcal/mile] equation. Also, absolute EE per mile for the CV group was similar across sub-groups. It appears the Loftin, et al. regression equation is useful for exercise prescription in that it allows for the prediction of EE for either walking or running a mile in normal weight and overweight adults.

Included in

Kinesiology Commons

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.