Comparison of body composition methods in obese African-American women.

Obesity
R L NewtonDonald A Williamson

Abstract

To compare the accuracy of percentage body fat (%BF) estimates between bioelectrical impedance analysis (BIA) and DXA in obese African-American women. Fifty-five obese African-American women (mean age, 45 years; mean BMI, 38; mean %BF, 48%) were studied. BF was assessed by both BIA (RJL Systems BIA 101Q; RJL Systems, Clinton Township, MI) and DXA (Hologic QDR-2000 Bone Densitometer; Hologic Inc., Bedford, MA). Generalized and ethnicity- and obese-specific equations were used to calculate %BF from the BIA. Bland-Altman analyses were used to compare the agreement between the BIA and the DXA, with the DXA serving as the criterion measure. Two of the generalized equations provided consistent estimates across the weight range in comparison with the DXA estimates, whereas most of the other equations increasingly underestimated %BF as BF increased. One of the generalized and one of the ethnicity-specific equations had mean differences that were not significantly different from the DXA value. The findings show that the Lukaski equation provided the most precise and accurate estimates of %BF in comparison with the QDR 2000 and provide preliminary support for the use of this equation for obese African-American women.

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Citations

Dec 22, 2011·Women & Health·Ygnacio LopezRebecca E Lee
Mar 17, 2009·Journal of Clinical Densitometry : the Official Journal of the International Society for Clinical Densitometry·Dina H FakhrawiZaida Cordero-MacIntyre
Feb 2, 2008·Journal of the American Dietetic Association·Linda Van HornGeeta Sikand
Oct 12, 2010·Obesity Surgery·Célia Lloret LinaresJean-Michel Oppert
Oct 8, 2017·American Journal of Human Biology : the Official Journal of the Human Biology Council·Robinson Ramírez-VélezJacqueline Schmidt-RioValle
Sep 11, 2019·Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America·Anne Marie KerchbergerCecile D Lahiri

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