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Resting energy expenditure in the obese: a cross-validation and comparison of prediction equations
1Department of Medicine, Columbia University College of Physicians & Surgeons, New York, NY.
Objective:
To examine the accuracy and precision of 12 equations or tables for predicting resting metabolic rate (RMR) in obese persons.
Design:
Observational (correlational) study.
Setting:
Obesity Research Center, St Luke's/Roosevelt Hospital, New York, NY.
Subjects/Samples:
One hundred twenty-six (73 women, 53 men) healthy, obese subjects recruited through the Obesity Research Center's Weight Control Unit.
Measures:
RMR by indirect calorimetry. Weight and height were measured to the nearest 0.1 kg and to the nearest 1 cm.
Statistical Analyses Performed:
Bivariate regression of predicted RMR on measured RMR; paired t tests for the difference between means of predicted RMR and measured RMR.
Results:
Of the 12 prediction equations, 6 had intercepts or slopes that were significantly different from 0 and 1, respectively. With two exceptions, the equations accounted for between 56% and 63% of the variance in measured RMR. The Robertson and Reid (1952) equation and the Fleisch (1951) equation performed best with our obese sample.
Applications/Conclusions:
The Robertson and Reid (1952) and the Fleisch (1951) equations are recommended for clinical use with obese patients.
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