Comparison in man of total body electrical conductivity and lean body mass derived from body density: validation of a new body composition method.
Comparison in man of total body electrical conductivity and lean body mass derived from body density: validation of a new body composition method.
复制标题
人体全身电导率和由身体密度得出的去脂体重的比较：新身体成分方法的验证。
DOI：
10.1016/0026-0495(83)90018-5
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
VanItallie,TB
中科院分区：
文献类型：
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作者：
Presta,E;Segal,KR;Gutin,B;Harrison,GG;VanItallie,TB
本文报道了一项研究，比较了人体总电导率（TOBEC）测量和通过静水压称重估计的瘦体重（LBM）。TOBEC方法提供了一种评估人体成分的新方法，该方法基于瘦组织的电导率远远大于脂肪的原理。在年龄（20至53岁）、体重（45至155公斤）和肥胖（9.5至53.0%体脂）差异很大的32名男性和女性样本中，TOBEC测量结果发现非常可靠（r= 0.999），并且与流体静力学估计的LBM高度相关（r= 0.903，P< 0.0001）。当TOBEC分数转换为提供单一变量时；即被试身高乘以TOBEC分数的平方根，与LBM有较高的相关性（r= 0.943）。考虑性别因素进一步增强了TOBEC对LBM的预测（r= 0.951）。这些观察结果有力地强化了先前的研究结果，即TOBEC与全身钾和全身水之间存在高度相关性。因此，这种新方法有望为身体成分的评估提供一种简单、快速、客观、无创的有用技术。
This article reports a study in which total body electrical conductivity (TOBEC) measurements and lean body mass (LBM) estimated from hydrostatic weighing in human subjects were compared. The TOBEC method provides a new approach to assessment of human body composition that is based on the principle that the electrical conductivity of lean tissue is far greater than that of fat. In a sample of 32 men and women varying widely in age (20 to 53 years), body weight (45 to 155 kg), and adiposity (9.5 to 53.0% body fat), the TOBEC measurement was found to be extremely reliable (r= 0.999) and to correlate highly with hydrostatically estimated LBM (r= 0.903,P< 0.0001). When the TOBEC scores were transformed to provide a single variable; namely, the subject's height times the square root of the TOBEC score, a higher correlation with LBM was obtained (r= 0.943). Taking gender into account further enhanced the prediction of LBM from TOBEC (r= 0.951). These observations strongly reinforce the results of a previous investigation in which high correlations were found between TOBEC and both total body potassium and total body water. Accordingly, this new method promises to provide a useful technique for the evaluation of body composition that is at once simple, rapid, objective, and noninvasive.