Kettaneh A, Heude B, Lommez A, Borys J M, Ducimetière P, Charles M A
INSERM U258, 16 Avenue Paul Vaillant Couturier, 94807 Villejuif, France.
Diabetes Metab. 2005 Dec;31(6):534-41. doi: 10.1016/s1262-3636(07)70228-8.
To evaluate the reproducibility of the measurement of% body fat by bipedal biometrical impedance analysis (BIA) compared with anthropometric measurements of adiposity in children and the correlations between these methods in children and adults.
A cross-sectional study in a total of 1080 adults and children enrolled in 1999 in the Fleurbaix-Laventie Ville Santé II (FLVS II) population-based study in northern France. The reproducibility of anthropometrical and BIA methods was determined by a nested analysis of variance of repeated measurements by 2 investigators and a bipedal BIA device (Tanita TBF 310) in 64 pupils of two 5th grade classes. The correlation of BIA and anthropometric adiposity measurements with the unknown relative fat mass or volume of the body estimated by a latent adiposity variable (LAV) was established by the triads' method in 1080 subjects of the FLVS II cohort.
The reproducibility was similar for the sum of skinfolds, waist circumference and BIA% fat measurements (intraclass correlation coefficients: 0.979-0.992). Correlation coefficient between BIA body fat% and the LAV was higher than 0.86 in all sex and Tanner stage related groups, and similar in children and adults, except in pubertal boys (0.76).
With a high level of reproducibility, foot-to-foot BIA analysis provides a valuable measurement of total% fat for epidemiologic studies in children. However further studies are needed before extrapolating these results to overweight children.
评估双足生物电阻抗分析(BIA)测量体脂百分比的可重复性,并与儿童肥胖的人体测量方法进行比较,同时研究这些方法在儿童和成人中的相关性。
这是一项横断面研究,共纳入了1999年参与法国北部弗勒尔拜-拉文蒂健康城市II(FLVS II)基于人群研究的1080名成人和儿童。通过对两名研究者和一台双足BIA设备(Tanita TBF 310)对两个五年级班级的64名学生进行重复测量的方差分析,确定人体测量和BIA方法的可重复性。通过三联法在FLVS II队列的1080名受试者中,建立BIA和人体测量肥胖指标与由潜在肥胖变量(LAV)估计的未知相对体脂质量或体积之间的相关性。
皮褶厚度总和、腰围和BIA体脂百分比测量的可重复性相似(组内相关系数:0.979 - 0.992)。在所有性别和坦纳分期相关组中,BIA体脂百分比与LAV之间的相关系数均高于0.86,儿童和成人相似,但青春期男孩除外(0.76)。
双足BIA分析具有高度可重复性,为儿童流行病学研究提供了有价值的总脂肪百分比测量方法。然而,在将这些结果外推至超重儿童之前,还需要进一步研究。