Fatigue-Induced Cole Electrical Impedance Model Changes of Biceps Tissue Bioimpedance

Fractal and Fractional

Fu, Bo¹  Freeborn, Todd J.² 

[1] Author to whom correspondence should be addressed.;Department of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA

关键词: bioimpedance;    Cole-impedance model;    fractional-order model;    tissue;    fatigue;   

DOI  :  10.3390/fractalfract2040027

学科分类：数值分析

来源: mdpi

【 摘 要 】

Bioimpedance, or the electrical impedance of biological tissues, describes the passive electrical properties of these materials. To simplify bioimpedance datasets, fractional-order equivalent circuit presentations are often used, with the Cole-impedance model being one of the most widely used fractional-order circuits for this purpose. In this work, bioimpedance measurements from 10 kHz to 100 kHz were collected from participants biceps tissues immediately prior and immediately post completion of a fatiguing exercise protocol. The Cole-impedance parameters that best fit these datasets were determined using numerical optimization procedures, with relative errors of within approximately ± 0.5 % and ± 2 % for the simulated resistance and reactance compared to the experimental data. Comparison between the pre and post fatigue Cole-impedance parameters shows that the R ∞, R 1, and f p components exhibited statistically significant mean differences as a result of the fatigue induced changes in the study participants.

【 授权许可】

CC BY