Estimation of total body water by bioelectrical impedance analysis in blacks

American Journal of Human Biology : the Official Journal of the Human Biology Council
M Carola Zillikens, Joan M Conway

Abstract

Several differences exist between the body composition of blacks and whites. This study was designed to investigate the applicability of bioelectrical impedance analysis (BIA) in blacks, using prediction equations developed in whites. A multiple regression equation developed on 79 white adults, using deuterium oxide dilution space total body water (D2 O-TBW) as the reference method, was prospectively applied to 88 blacks aged 19-50 years. Although the regression line of D2 O-TBW on BIA-TBW was not significantly different from the line of identity (r = 0.98, SEE = 1.71 liters), mean TBW was significantly underestimated by 0.84 liter. Other BIA equations from the literature also underestimated D2 O-TBW in blacks, except for an equation developed on a mixed black and white population. Multiple regression analysis on the data of the black and white subjects combined showed that race, offered as a separate independent variable, improved the correlation with D2 O-TBW slightly but significantly (P < 0.01). It was concluded that BIA may be valuable in the assessment of body composition in blacks as well as in whites. In this study a small underestimation of TBW occurred in blacks, using (BIA) equations from whites. This may be due to r...Continue Reading

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Nov 24, 2004·Clinical Nutrition : Official Journal of the European Society of Parenteral and Enteral Nutrition·Ursula G KyleUNKNOWN ESPEN
Jun 1, 2000·Asia Pacific Journal of Clinical Nutrition·P DeurenbergG Schmidt
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Jun 15, 2007·Epilepsia·Sabrina CrepinJean-Claude Desport
Aug 25, 1999·Clinical Nutrition : Official Journal of the European Society of Parenteral and Enteral Nutrition·J P SimonsE F Wouters

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