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Predictive resting metabolic rate RMR equations are widely used to determine total daily energy expenditure TDEE However it remains unclear whether these predictive RMR equations accurately predict TDEE in the athletic populations The purpose of this study was to examine the accuracy of 10 commonly used RMR prediction equations Cunningham De Lorenzo Freire Harris-Benedict Mifflin St Jeor Nelson Owen Tinsley Watson Schofield in collegiate men and women athletes One-hundred eighty-seven National Collegiate Athletic Association Division III men n 97 and women n 90 athletes were recruited to participate in one day of metabolic testing RMR was measured using indirect calorimetry and body composition was analyzed using air displacement plethysmography A repeated measures ANOVA with Bonferroni post hoc analyses was selected to determine mean differences between measured and predicted RMR Linear regression analysis was used to assess the accuracy of each RMR prediction method p 0 05 All prediction equations significantly underestimated RMR p 0 001 although there was no difference between the De Lorenzo and Watson equations and measured RMR p 1 00 for women only In men the Tinsley and Freire equations were the most agreeable formulas with the lowest root-mean-square prediction error value of 404 and 412 kcals respectively In women the De Lorenzo and Watson equations were the most agreeable equations with the lowest root-mean-squared error value of 171 and 211 kcals respectively The results demonstrate that such RMR equations may underestimate actual energy requirements of athletes and thus practitioners should interpret such values with caution Highlights All prediction equations significantly underestimated RMR in men athletes All prediction equations except for the De Lorenzo and Watson equations significantly underestimated RMR in women athletes Although a significant underestimation of RMR in men athletes the Freire and Tinsley equations were the most agreeable prediction equations In women athletes the De Lorenzo and Watson equations were the most agreeable prediction equations

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The accuracy of ten common resting metabolic rate prediction equations in men and women collegiate athletes.

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