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Design and Evaluation of an Electrical Bioimpedance Device Based on DIBS for Myography during Isotonic Exercises

Authors :
Vinicius Sirtoli
Kaue Morcelles
John Gomez
Pedro Bertemes-Filho
Source :
Journal of Low Power Electronics and Applications, Vol 8, Iss 4, p 50 (2018)
Publication Year :
2018
Publisher :
MDPI AG, 2018.

Abstract

Electrical Bioimpedance Spectroscopy (EIS) is a technique used to assess passive electrical properties of biological materials. EIS detects physiological and pathological conditions in animal tissues. Recently, the introduction of broadband excitation signals has reduced the measuring time for application techniques such as Electrical Bioimpedance Myography. Therefore, this work is aimed at proposing a prototype by using discrete interval binary sequences (DIBS), which is based on a system that holds a current source, impedance acquisition system, microcontroller and graphical user interface. Measurements between 5 Ω to 5 kΩ had impedance acquisition and phase angle errors of aproximately 2% and were lower than 3 degrees, respectively. Based on a proposed circuit, bioimpedance of the chest muscle (Pectoralis Major) was measured during isotonic exercise (push-up). As a result, our analyses have detected tiredness and fatigue. We have explored and proposed new parameters which assess such conditions, as both the maximum magnitude and tiredness coefficient. These parameters decrease exponentially with consecutive push-ups and were convergent in the majority of the sixteen days of measurement.

Details

Language :
English
ISSN :
20799268
Volume :
8
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Journal of Low Power Electronics and Applications
Publication Type :
Academic Journal
Accession number :
edsdoj.fc6eba0cee646d1844c9dc54d98d9d5
Document Type :
article
Full Text :
https://doi.org/10.3390/jlpea8040050