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Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán

2008, Number 5

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Rev Invest Clin 2008; 60 (5)

Validation of resting metabolic rate estimation equations in 9 to 12 years old Mexican children with normal weight and obesity

Balas-Nakash M, Villanueva-Quintana A, Vadillo-Ortega F, Perichart-Perera O

Language: Spanish
References: 27
Page: 395-402
PDF size: 85.74 Kb.


ABSTRACT

Introduction. Childhood obesity is a public health problem that has increased in the last years. The measurement of resting metabolic rate (RMR) is an important tool to establish any obesity intervention. Existing equations to estimate RMR have not been evaluated in Mexican children. Material and methods. We describe the association and the agreement between the WHO, Schofield, Harris-Benedict and the Tverskaya equations to estimate the RMR in 114 students (9-12 years old) with normal weight and obesity, of two public schools in Mexico. RMR was measured by indirect calorimetry, in addition, we did an anthropometric and body composition evaluation (electrical bioimpedance method). Results. The fat free mass was the variable that predicted the most variability in RMR. The WHO equation showed no significant difference in the RMR (calorimetry), while the Schofield, Harris-Benedict and the Tverskaya equations showed underestimation. The equation that presents the greatest agreement with the gold standard is the Tverskaya equation in both children with normal weight and obesity. Conclusions. The non concordant results in the RMR are explained by the differences in body composition. An equation that considers fat mass and fat free mass, as the one proposed by Tverskaya, seems to be the most appropriate equation to be used in clinical settings.


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