ESTIMATION OF TOTAL-BODY WATER BY BIOELECTRICAL IMPEDANCE ANALYSIS
ESTIMATION OF TOTAL-BODY WATER BY BIOELECTRICAL IMPEDANCE ANALYSIS
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DOI：
10.1093/ajcn/44.3.417
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发表时间：
1986-09-01
影响因子：
7.1
通讯作者：
SCHOELLER, DA
中科院分区：
文献类型：
--
作者：
KUSHNER, RF;SCHOELLER, DA
采用生物电阻抗分析法（BIA）测量了58例受试者的总身体水分（TBW），并与氘同位素稀释法进行了直接比较。首先，性别特异性和组等值开发的多元回归分析（各10）肥胖和非肥胖的男性和女性。高度2/电阻性阻抗是用于预测氘稀释空间（D2 O-TBW）的最重要变量，与体重相结合，得出R = 0.99，估计值SE = 1.75 L。方程预测D2 O-TBW同样好肥胖和非肥胖受试者。第二，在6名男性和12名女性的异质组中前瞻性地检验方程。性别特异性方程预测D2 O-TBW具有良好的相关系数（0.96和0.93），总误差（2.34和2.89 L），以及平均预测值和测量值之间的小差异（-1.4 ±-）。2.05和-0.48 . ±-. 2.83 L）。BIA比体重、身高和/或年龄更准确地预测D2 O-TBW。需要更多的人口来验证我们方程的适用性。
Total body water (TBW) measured by bioelectrical impedance analysis (BIA) was directly compared with deuterium-isotope dilution in a total of 58 subjects. First, sex-specific and group equating were developed by multiple regression analysis in (10 each) obese and nonobese men and women. Height2/resistive impedance was the most significant variable used to predict deuterium-dilution space (D2O-TBW) and, combined with weight, yielded R = 0.99 and SE of estimate = 1.75 L. Equations predicted D2O-TBW equally well for obese and nonobese subjects. Second, the equations were prospectively tested in a heterogenous group of 6 males and 12 females. Sex-specific equations predicted D2O-TBW with good correlation coefficients (0.96 and 0.93), total error (2.34 and 2.89 L), and a small difference between mean predicted and measured D2O-TBW (-1.4 .+-. 2.05 and -0.48 .+-. 2.83 L). BIA predicts D2O-TBW more accurately than weight, height, and/or age. A larger population is required to validate the applicability of our equations.