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Bioelectrical parameters of the whole human body obtained through bioelectrical impedance analysis
Author(s) -
Lafargue Alcibiades Lara,
Cabrales Luis Bergues,
Larramendi Ricardo Morales
Publication year - 2002
Publication title -
bioelectromagnetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.435
H-Index - 81
eISSN - 1521-186X
pISSN - 0197-8462
DOI - 10.1002/bem.10034
Subject(s) - bioelectrical impedance analysis , electrical impedance , bioelectromagnetics , biomedical engineering , amplitude , biological system , materials science , nuclear magnetic resonance , physics , biology , engineering , quantum mechanics , magnetic field , body mass index , endocrinology
Knowledge of electrical properties of body tissues across the frequency spectrum is useful for tissue characterization. The bioelectric impedance analysis method, operating from 1 to 250 kHz (multi‐frequency), was used in 23 normal male human subjects between the ages of 21 and 52 years, for estimation of their bioelectrical parameters. Amplitude of the output current was set to 800 μA RMS . The experimental data showed that bioelectric parameters were highly dependent on frequency and the presence of a threshold frequency around 4 kHz. In order to explain the unusual features observed in our experimental data, the human body was simulated through the Cole–Fricke–Cole model (RC circuit) and the Extended Cole–Fricke–Cole model (RLC circuit). The simulated data showed that the Extended Cole–Fricke–Cole model had a higher accuracy than the traditional Cole–Fricke–Cole model. These results suggest that the unusual features could be due to the possible existence of inductive effects in biological cells and body tissues and that the inductive parameter and the threshold frequency could be used for characterizing the healthy tissues as well as the traditional bioelectric parameters. © 2002 Wiley‐Liss, Inc. Bioelectromagnetics 23:450–454, 2002. © 2002 Wiley‐Liss, Inc.