Heitmann B L, Sørensen S S, Isaksson B
Ugeskr Laeger. 1989 Oct 2;151(40):2588-91.
The body composition of water and fat may be calculated on the basis of measurements of its impedance. Calculations are based on algorithms developed by all measurements of the body compositions of a reference material, by means of standard methods (eg hydrodensiometry, total body water by isotope dilutimetry). A commencial impedance analyser with built-in algorithm for calculation of total body water and body fat mass was evaluated and compared with measurements of the total body water in 42 young men and women. Very good agreement was found (mean values for total water were 34.2 and 33.5, respectively, for women and 46.8 and 47.0, respectively, for men). These calculations of total body water correlated better with the reference values than calculations from four other algorithms published in the literature. Simple anthropometric measurements (skin-fold thickness, BMI) resulted in significantly higher calculations of body fat mass than calculations based on impedance measurement. This study has shown that the technique of impedance measurement has good reliable validity for calculation of the body fat mass and that, on account of its simplicity, the method is suitable for field studies and also individual measurements.
水和脂肪的身体成分可根据其阻抗测量值来计算。计算基于通过标准方法（如水下密度测量法、同位素稀释法测定总体水）对参考物质的身体成分进行所有测量后开发的算法。对一台内置计算总体水和身体脂肪量算法的商用阻抗分析仪进行了评估，并与42名年轻男性和女性的总体水测量值进行了比较。结果发现一致性非常好（女性总体水的平均值分别为34.2和33.5，男性分别为46.8和47.0）。这些总体水的计算值与参考值的相关性比文献中发表的其他四种算法的计算结果更好。简单的人体测量（皮褶厚度、体重指数）得出的身体脂肪量计算值明显高于基于阻抗测量的计算值。这项研究表明，阻抗测量技术在计算身体脂肪量方面具有良好可靠的有效性，并且由于其简单性，该方法适用于现场研究以及个体测量。
