Nakadomo F, Tanaka K, Hazama T, Maeda K
Division of Exercise Physiology, Osaka Prefectural College of Nursing, Japan.
Ann Physiol Anthropol. 1990 Apr;9(2):109-14. doi: 10.2114/ahs1983.9.109.
Effects of skin resistance on impedance values were studied in order to propose reliable determination of body composition in human. Analysis of the data indicated that impedance values (Z = (R2 + Xc2)0.5) varied considerably in the following conditions: 1) 230 +/- 97.8 ohms when electrodes were directly attached; 2) 490 +/- 52.5 ohms when electrodes were attached immediately after use of alcohol; 3) 584 +/- 44.1 ohms when electrodes were attached immediately after use of alcohol with electrode gel; and 4) 589 +/- 45.0 ohms when electrodes were attached in the order of elimination of skin resistance----use of alcohol----use of electrode gel. We suggest that impedance obtained by the bioelectrical impedance analysis should be measured immediately after elimination of skin resistance at least with electrode gel.
为了提出可靠测定人体身体成分的方法，研究了皮肤电阻对阻抗值的影响。数据分析表明，在以下条件下阻抗值（Z = (R2 + Xc2)0.5）变化很大：1）直接连接电极时为230 +/- 97.8欧姆；2）使用酒精后立即连接电极时为490 +/- 52.5欧姆；3）使用酒精和电极凝胶后立即连接电极时为584 +/- 44.1欧姆；4）按照消除皮肤电阻——使用酒精——使用电极凝胶的顺序连接电极时为589 +/- 45.0欧姆。我们建议，通过生物电阻抗分析获得的阻抗应至少在使用电极凝胶消除皮肤电阻后立即测量。
