Comparison of two bioelectrical impedance analysis models for total body water measurement in children.
We compared two bioelectrical impedance analysis models, the right-sided tetrapolar method and an experimental cylindrical method, to total body water (TBW) determined by isotopic dilution in 37 prepubertal children aged 5-9 years, who were divided into development and cross-validation groups. Despite its theoretical advantage, no improvement in predicted TBW was seen with the experimental method. The best predictive equation, using the tetrapolar method, was TBW (kg) = 1.84 + 0.45 (height square/resistance) +0.11(weight); r2 = 0.98; SEE = 0.62 kg.
Danford
L C
LC
Clinical Nutrition Research Unit, University of Chicago, Illinois.
Schoeller
D A
DA
Kushner
R F
RF
D001823:Body Composition; D001834:Body Water; D001835:Body Weight; D002648:Child; D002675:Child, Preschool; D017097:Electric Impedance; D006801:Humans; D008954:Models, Biological; D012044:Regression Analysis