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

Department of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
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Fractal Fract 2018, 2(4), 27; https://doi.org/10.3390/fractalfract2040027
Received: 13 September 2018 / Revised: 17 October 2018 / Accepted: 22 October 2018 / Published: 24 October 2018
(This article belongs to the Special Issue Fractional Behavior in Nature)
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. View Full-Text
Keywords: bioimpedance; Cole-impedance model; fractional-order model; tissue; fatigue bioimpedance; Cole-impedance model; fractional-order model; tissue; fatigue
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Freeborn, T.J.; Fu, B. Fatigue-Induced Cole Electrical Impedance Model Changes of Biceps Tissue Bioimpedance. Fractal Fract 2018, 2, 27.

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