Validity of the BodyGem calorimeter and prediction equations for the assessment of resting energy expenditure in overweight and obese Saudi males
Saudi Medical Journal. 2011; 32 (7): 718-724
em Inglês
| IMEMR
| ID: emr-129978
ABSTRACT
To assess the accuracy of resting energy expenditure [REE] measurement in a sample of overweight and obese Saudi males, using the BodyGem device [BG] with whole room calorimetry [WRC] as a reference, and to evaluate the accuracy of predictive equations. Thirty-eight subjects [mean +/- SD, age 26.8 +/- 3.7 years, body mass index 31.0 +/- 4.8] were recruited during the period from 5 February 2007 to 28 March 2008. Resting energy expenditure was measured using a WRC and BG device, and also calculated using 7 prediction equations. Mean differences, bias, percent of bias [%bias], accurate estimation, underestimation and overestimation were calculated. Repeated measures with the BG were not significantly different [accurate prediction 81.6%;%bias 1.1 +/- 6.3, p>0.24] with limits of agreement ranging from +242 to-200 kcal. Resting energy expenditure measured by BG was significantly less than WRC values [accurate prediction 47.4%;%bias 11.0 +/- 14.6, p=0.0001] with unacceptably wide limits of agreement. Harris-Benedict, Schofield and World Health Organization equations were the most accurate, estimating REE within 10% of measured REE, but none seem appropriate to predict the REE of individuals. There was a poor agreement between the REE measured by WRC compared to BG or predictive equations. The BG assessed REE accurately in 47.4% of the subjects on an individual level
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Índice:
IMEMR (Mediterrâneo Oriental)
Assunto principal:
Calorimetria
/
Reprodutibilidade dos Testes
/
Sobrepeso
/
Previsões
/
Matemática
/
Obesidade
Tipo de estudo:
Avaliação Econômica em Saúde
Limite:
Adulto
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Saudi Med. J.
Ano de publicação:
2011
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