Agreement of BMI-Based Equations and DXA in Determining Body-Fat Percentage in Adults With Down Syndrome

Adapted Physical Activity Quarterly : APAQ
Michael R EscoPhillip A Bishop

Abstract

The purpose of this investigation was to evaluate measurements of body-fat percentage (BF%) in 4 body-mass-index- (BMI) -based equations and dual-energy X-ray absorptiometry (DXA) in individuals with Down syndrome (DS). Ten male and 10 female adults with DS volunteered for this study. Four regression equations for estimating BF% based on BMI previously developed by Deurenberg et al. (DE(BMI-BF%)), Gallagher et al. (GA(BMI-BF%)), Womersley & Durnin (WO(BMI-BF%)), and Jackson et al. (JA(BMI-BF%)) were compared with DXA. There was no significant difference (p = .659) in mean BF% values between JA(BMI-BF%) (BF% = 40.80% ± 6.3%) and DXA (39.90% ± 11.1%), while DE(BMI-BF%) (34.40% ± 9.0%), WO(BMI-BF%) (35.10% ± 9.4%), and GA(BMI-BF%) (35.10% ± 9.4%) were significantly (p < .001) lower. The limits of agreement (1.96 SD of the constant error) varied from 9.80% to 16.20%. Therefore, BMI-based BF% equations should not be used in individuals with DS.

Citations

Dec 27, 2017·Health Promotion Practice·Rachael PatuscoJane Ziegler
Dec 30, 2016·Journal of Strength and Conditioning Research·Brett S NickersonKyung-Shin Park
Oct 17, 2020·Medicine and Science in Sports and Exercise·Brett S NickersonKyung-Shin Park

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