Potential errors in the application of mixture theory to multifrequency bioelectrical impedance analysis

被引：37
作者：
Ward, LC [1 ]
Elia, M
Cornish, BH
机构：
[1] Univ Queensland, Dept Biochem, Brisbane, Qld 4072, Australia
[2] MRC, Dunn Clin Nutr Ctr, Cambridge CB2 1QL, England
[3] Queensland Univ Technol, Ctr Hlth & Med Phys, Brisbane, Qld, Australia
来源：
PHYSIOLOGICAL MEASUREMENT | 1998年 / 19卷 / 01期
关键词：
mixture theory; errors; bioelectrical impedance analysis; multiple-frequency bioelectrical impedance analysis;
D O I：
10.1088/0967-3334/19/1/005
中图分类号：
Q6 [生物物理学];
学科分类号：
071011 ;
摘要：
Potential errors in the application of mixture theory to the analysis of multiple-frequency bioelectrical impedance data for the determination of body fluid volumes are assessed. Potential sources of error include: conductive length; tissue fluid resistivity; body density; weight and technical errors of measurement. Inclusion of inaccurate estimates of body density and weight introduce errors of typically < +/-3% but incorrect assumptions regarding conductive length or fluid resistivities may each incur errors of up to 20%.
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收藏
页码：53 / 60
页数：8
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