Evaluation of simple body composition methods: assessment of validity in prepubertal Chilean children

被引:21
作者
Aguirre, C. A. [1 ]
Salazar, G. D. C. [1 ]
Lopez de Romana, D. V. [1 ]
Kain, J. A. [1 ]
Corvalan, C. L. [1 ]
Uauy, R. E. [1 ]
机构
[1] Univ Chile, INTA, Santiago 5524, Chile
关键词
BIOELECTRICAL-IMPEDANCE ANALYSIS; PREDICTION EQUATIONS; FAT; FATNESS;
D O I
10.1038/ejcn.2014.144
中图分类号
R15 [营养卫生、食品卫生]; TS201 [基础科学];
学科分类号
100403 ;
摘要
BACKGROUND/OBJECTIVE: The aim of this study was to assess the validity of body fatness estimations based on skinfolds and bioelectrical iImpedance analyses (BIA) measurements compared to a three-component model (3C model) in prepubertal Chilean children, considering potential differences by sex and nutritional status. SUBJECTS/METHODS: Four hundred and twenty four Chilean children (198 females and 226 males) were assessed for body composition. Body fat percentage (BF%) was evaluated by Skinfold equations (Slaughter, Ramirez and Huang) and Bioelectrical impedance (BIA: Tanita BC-418MA) using both the equipment and the Ramirez equation. Measurements based on a 3C model constructed from total body water estimates by isotope dilution and from body volume estimates by air displacement plethysmography were used as gold standard. RESULTS: Coefficient of determination (R-2) values were higher in overweight and in the whole group of both gender. All slopes were differed significantly from 1, and most intercepts were significantly different from 0. Skinfold Equations: an underestimation of BF% was found for all equations, being higher with the Slaughter equation. BIA: Tanita underestimated BF% in all groups, whereas Ramirez equation shows an overestimation. CONCLUSIONS: Skinfolds and bio-impedance equations serve well to rank children according to their BF%. However, these methods are not accurate for describing body composition in prepubertal Chilean children.
引用
收藏
页码:269 / 273
页数:5
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