Cross-Validation of a Recently Published Equation Predicting Energy Expenditure to Run or Walk a Mile in Normal-Weight and Overweight Adults

Cody E. Morris Department of Health, Exercise Science, and Recreation Management, University of Mississippi, University, MississippiCorrespondence[email protected]

Scott G. Owens Department of Health, Exercise Science, and Recreation Management, University of Mississippi, University, Mississippi

Dwight E. Waddell Department of Electrical Engineering, University of Mississippi, University, Mississippi

Martha A. Bass Department of Health, Exercise Science, and Recreation Management, University of Mississippi, University, Mississippi

John P. Bentley Department of Pharmacy Administration, University of Mississippi, University, Mississippi

Mark Loftin Department of Health, Exercise Science, and Recreation Management, University of Mississippi, University, Mississippi

Abstract

An equation published by CitationLoftin, Waddell, Robinson, and Owens (2010) was cross-validated using ten normal-weight walkers, ten overweight walkers, and ten distance runners. Energy expenditure was measured at preferred walking (normal-weight walker and overweight walkers) or running pace (distance runners) for 5 min and corrected to a mile. Energy expenditure per mile was predicted using the CitationLoftin et al. (2010) equation yielding a mean predicted value of 99.7 ± 13.8 kcal · mile⁻¹. This was significantly different (p < .05) than the mean actual value from the cross-validation group (107.8 ± 15.5 kcal · mile⁻¹), although the difference was within the published standard error of estimate. A Chow test revealed no significant differences between regression coefficients of the original equation and the cross-validation group equation. It appears the CitationLoftin et al. (2010) regression equation is useful for exercise prescription of energy expenditure for walking or running a mile in normal-weight and overweight adults.

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Cross-Validation of a Recently Published Equation Predicting Energy Expenditure to Run or Walk a Mile in Normal-Weight and Overweight Adults

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Cross-Validation of a Recently Published Equation Predicting Energy Expenditure to Run or Walk a Mile in Normal-Weight and Overweight Adults

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