GENUD (Growth, Exercise, NUtrition and Development) Research Group, Faculty of Health and Sport Sciences, Huesca, University of Zaragoza, Spain.
Res Dev Disabil. 2011 Sep-Oct;32(5):1764-9. doi: 10.1016/j.ridd.2011.03.006. Epub 2011 Apr 1.
To determine the accuracy of the published percentage body fat (%BF) prediction equations (Durnin et al., Johnston et al., Brook and Slaughter et al.) from skinfold thickness compared to air displacement plethysmography (ADP) in children and adolescents with Down syndrome (DS). Twenty-eight children and adolescents with DS (10-20 years old; 12 girls, 16 boys) participated in the study. Anthropometric measurements height, weight, and skinfolds biceps, triceps, subscapular and suprailiac were performed following ISAK recommendations. Total body density (TBD) was estimated using three equations and was also measured with ADP; while %BF was calculated from all densities using the Siri equation and from skinfolds using the Slaughter et al. equation. Finally, the agreement between methods was assessed by plotting the results in Bland-Altman graphs. The presence of heteroscedasticity was also examined. Despite the equation of Slaughter et al. had a large 95% limits of agreement, it was the only one without a significant inter-methods difference and without heteroscedasticity. The equation of Slaughter seems to be, from the studied, the most accurate for estimating %BF in children and adolescents with DS.
比较皮褶厚度与空气置换体积描记法（air displacement plethysmography，ADP），评估现有的体脂百分比（%BF）预测公式（Durnin 等，Johnston 等，Brook 和 Slaughter 等）在唐氏综合征（Down syndrome，DS）儿童和青少年中的准确性。
28 名 DS 儿童和青少年（10-20 岁；12 名女孩，16 名男孩）参与了这项研究。按照 ISAK 建议，对身高、体重和皮褶（肱二头肌、肱三头肌、肩胛下角和髂嵴上）进行了测量。使用三个方程估计总体密度（TBD），并使用 ADP 进行测量；使用 Siri 方程从所有密度计算 %BF，使用 Slaughter 等的方程从皮褶计算 %BF。最后，通过在 Bland-Altman 图中绘制结果来评估方法之间的一致性。还检查了异方差性的存在。尽管 Slaughter 等的方程具有较大的 95%一致性界限，但它是唯一没有显著方法间差异且没有异方差性的方程。从研究结果来看，Slaughter 方程似乎是估计 DS 儿童和青少年 %BF 最准确的方程。
