Prediction of body-fat percentage from skinfold and bio-impedance measurements in Indian school children
Prediction of body-fat percentage from skinfold and bio-impedance measurements in Indian school children
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DOI：
10.1038/ejcn.2011.119
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发表时间：
2011-12-01
影响因子：
4.7
通讯作者：
Kurpad, A.
中科院分区：
文献类型：
--
作者：
Kehoe, S. H.;Krishnaveni, G. V.;Kurpad, A.
背景/目的：在南亚儿童中，很少有通过现场方法计算体脂百分比（BF%）的公式。本研究的目的是评估协议BF%来自主要的参考方法，从皮褶方程和生物阻抗分析（BIA）在印度children.Subjects/Methods：我们测量BF%在两组印度儿童。在浦那，570名6-8岁的农村儿童接受了双能X线吸收测定法（DXA）扫描。在迈索尔，对59名7-9岁的城市儿童进行了双标记水中的O-18。我们在50 kHz下进行BIA和人体测量，包括肩胛下和三头肌皮褶厚度。我们使用Wickramasinghe、Shawei、Slaughter和Dezenburg发表的公式，根据人体测量数据和制造商的BIA测量公式计算BF%。我们评估协议来自DXA和双标记的水使用Bland-Altman analysis.Results的值：儿童平均与国际标准相比，轻，薄。参考BF%值与所有方程的值之间的一致性较差。对于Wickramasinghe、Shawei和Slaughter方程，不符合Bland-Altman分析的假设。Dezenberg方程低估了大多数儿童的BF%（浦那的平均差异为-13.4，LOA为-22.7，-4.0，迈索尔为-7.9，LOA为-13.7和-2.2）。在浦那和迈索尔，BIA方程的平均偏差分别为+5.0%和+1.95%，一致性界限很宽，分别为-5.0，15.0和-7.8，11.7.Conclusions：目前可用的皮褶厚度方程不能准确预测印度儿童的BF%。我们建议使用四室模型在该人群中建立BIA方程。欧洲临床营养学杂志（2011）65，1263-1270; doi：10.1038/ejcn.2011.119; 2011年7月6日在线发表
Background/Objectives: Few equations for calculating body-fat percentage (BF%) from field methods have been developed in South-Asian children. The objective of this study was to assess agreement between BF% derived from primary reference methods and that from skinfold equations and bio-impedance analysis (BIA) in Indian children.Subjects/Methods: We measured BF% in two groups of Indian children. In Pune, 570 rural children aged 6-8 years underwent dual-energy X-ray absorptiometry (DXA) scans. In Mysore O-18 in doubly labeled water was administered to 59 urban children aged 7-9 years. We conducted BIA at 50 kHz and anthropometry, including sub-scapular and triceps skinfold thicknesses. We used the published equations of Wickramasinghe, Shaikh, Slaughter and Dezenburg to calculate BF% from anthropometric data and the manufacturer's equation for BIA measurements. We assessed agreement with values derived from DXA and doubly labeled water using Bland-Altman analysis.Results: Children were light and thin on average compared with international standards. There was poor agreement between the reference BF% values and those from all equations. Assumptions for Bland-Altman analysis were not met for Wickramasinghe, Shaikh and Slaughter equations. The Dezenberg equations under-predicted BF% for most children (mean difference in Pune -13.4, LOA -22.7, -4.0 and in Mysore -7.9, LOA (-13.7 and -2.2). The mean bias for the BIA equation in Pune was +5.0% and in Mysore +1.95%, and the limits of agreement were wide; -5.0, 15.0 and -7.8, 11.7 respectively.Conclusions: Currently available skinfold equations do not accurately predict BF% in Indian children. We recommend development of BIA equations in this population using a four-compartment model. European Journal of Clinical Nutrition (2011) 65, 1263-1270; doi:10.1038/ejcn.2011.119; published online 6 July 2011