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Comparison of Body Composition Methods in Obese African-American Women
Article first published online: 6 SEP 2012
2006 North American Association for the Study of Obesity (NAASO)
Volume 14, Issue 3, pages 415–422, March 2006
How to Cite
Newton, R. L., Alfonso, A., York-Crowe, E., Walden, H., White, M. A., Ryan, D. and Williamson, D. A. (2006), Comparison of Body Composition Methods in Obese African-American Women. Obesity, 14: 415–422. doi: 10.1038/oby.2006.55
- Issue published online: 6 SEP 2012
- Article first published online: 6 SEP 2012
- Received for review February 03, 2005; Accepted in final form December 23, 2005
- bioelectrical impedance analysis;
- African American
Objective: To compare the accuracy of percentage body fat (%BF) estimates between bioelectrical impedance analysis (BIA) and DXA in obese African-American women.
Research Methods and Procedures: 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.
Results: 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.
Discussion: 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.