Development of methods for performing the maximum voluntary contraction (MVC) test

Mateusz Kukla,Łukasz Warguła,Bartosz Wieczorek,M Vasko,M Sága,M Handrik,V Baniari,L Jakubovičová,P Kopas,M Blatnická,O Štalmach,A Sapietová

doi:10.1051/matecconf/201815705015

Abstract

The aim of the study is to determine the most effective isometric exercises required in order to perform MVC (Maximum Voluntary Contraction) tests under given static muscle contraction conditions. To this end, a group of four muscles was defined and on this basis, a series of exercises was selected. During electromyography studies, the electrical activity of the muscles was recorded. The article presents the results obtained for all exercises in the whole group of subjects. The data obtained provide a basis for evaluating and selecting the method of loading the analysed muscles during MVC tests. This is necessary in order to perform a normalization of raw (unprocessed) EMG signal, thus enabling comparison of results between individual subjects. Analyses concerning this kind of diagnosis of the electrical activity of muscles are widely applied in research related to rehabilitation and medicine, sports science, but also ergonomics.

Highlights

Kinesiological electromiography, called surface electromiography, is an experimental technique for examining the electrical activity of muscles
The electrical voltage value determined in this way depends, among other things, on the load that is being overcome. This method of analysis allows to define the activity of selected muscle groups over time during performance of specific exercises
It is impossible to make a straightforward comparison between the values measured in individual measurement sites or for individual persons. This is due to constantly changing physico-chemical conditions in the human body. Despite these limitations surface electromiography is frequently used in research related to rehabilitation and medicine

Summary

Introduction

Kinesiological electromiography, called surface electromiography, is an experimental technique for examining the electrical activity of muscles. It is impossible to make a straightforward comparison between the values measured in individual measurement sites or for individual persons This is due to constantly changing physico-chemical conditions in the human body. The methods described are applied in the engineering practice They are widely used for determining muscle strength during performance of various physical activities [3, 4]

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Conclusion