Article

Resting energy expenditure in children and adolescents: agreement between calorimetry and prediction equations.

Departamento de Pediatría, Facultad de Medicina, Universidad de Zaragoza, Zaragoza, Spain.
Clinical Nutrition (impact factor: 3.73). 07/2002; 21(3):255-60. pp.255-60
Source: PubMed

ABSTRACT To assess the degree of agreement between indirect calorimetry and five equations commonly used to predict resting energy expenditure (REE) in obese and non-obese children and adolescents.
In 116 children and adolescents (57 obese and 59 non-obese) aged between 7.8 and 16.6 years, REE was measured (MREE) by open-circuit indirect calorimetry under standardized conditions. REE was predicted (PREE) in all subjects with equations from the Food and Agriculture/World Health Organization/United Nations University (FAO/WHO/UNU), Maffeis et al., Harris and Benedict, and two from Schofield: one using weight (W) and one using height and weight (H-W). Agreement between indirect calorimetry and equations was assessed following the Bland-Altman method.
In the entire cohort group, only data from FAO/WHO/UNU, Schofield-W and Schofield-HW equations showed non-statistic differences against calorimetry results. When agreement between equations and calorimetry was tested, Schofield-HW equation showed the lowest mean MREE-PREE difference: 3.7 kcal/d (limits of agreement -293 and 300 kcal/d; 95% confidence interval for the bias -24.0 to 31.5 kcal/d) and the best agreement. Group by group, equations which obtained the best agreement were: FAO/WHO/UNU in girls, Schofield-HW in boys, Schofield-HW in obese, and Schofield-W in non-obese.
Until more accurate prediction equations are developed, we recommend Schofield-HW equations for REE studies with a mixed population of obese and non-obese children and adolescents; however, FAO/WHO/UNU equation may also be useful in girls and Schofield-W equation in non-obese children.

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Keywords

95% confidence interval
 
accurate prediction equations
 
agreement -293
 
Agriculture/World Health Organization/United Nations University
 
calorimetry
 
calorimetry results
 
entire cohort group
 
FAO/WHO/UNU equation
 
indirect calorimetry
 
mixed population
 
MREE-PREE difference
 
non-statistic differences
 
open-circuit indirect calorimetry
 
PREE
 
REE studies
 
resting energy expenditure
 
Schofield-HW equation
 
Schofield-HW equations
 
Schofield-W
 
Schofield-W equation
 

G Rodríguez