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

[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.

[学科分类] 数值分析

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