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%.

引用

页码：53 / 60

页数：8

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