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COMPARISON BETWEEN INDIRECT CALORIMETRY AND PREDICTION EQUATIONS FOR WOMEN WITH GRADE III OBESITY

Bruno Oliveira, Carolina Nicoletti, Cristiana Oliveira, Marcela Pinhel, Carla Nonino

Abstract

Resting metabolic rate (RMR) is an important parameter to guide nutritional therapy of class III obese patients. The objective of the present study was to compare indirect calorimetry (IC) with other predictive equations. This is a cross-sectional study on women with class III obesity (body mass index > 40 kg/m²). Weight, height, fat-free mass, fat mass and resting metabolic rate of all individuals were measured. Bland–Altman plot was used to analyze the agreement between IC and predictive equations’ results. A total of 101 women with obesity class III, mean age of 36.3±10 years were evaluated. Harrys-Benedict and WHO equations showed similar bias and limits, (181.6 kcal, +2SD=765.5, -2SD=-402.2), (156.4 kcal, +2SD= 799.4, -2SD= -486.6, respectively). The Mifflin-St. Jeor and Owen equations showed large clinical bias (mean of 239.2 kcal and 463.9 kcal, respectively), and a tendency to overestimate RMR. The prediction equations tested in the study had low accuracy in estimating RMR of women with class III obesity.

Acknowledgements: Grant#2015/06624-1, São Paulo Research Foundation (FAPESP)


Keywords

resting metabolic rate, obesity, equation, women




DOI: http://dx.doi.org/10.14748/ssp.v4i1.4006

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About The Authors

Bruno Oliveira

Carolina Nicoletti

Cristiana Oliveira

Marcela Pinhel

Carla Nonino

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