Cited by 10Muscle activation and electromyography studiesMuscle Physiology and DisordersMechanics and Biomechanics Studies

A Simplified Analysis of Real-time Monitoring of Muscle Contraction during Dynamic Exercise Using an MMG/EMG Hybrid Transducer System

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Fukuhara, Shinichi, Oka, Hisao·2019·Advanced Biomedical Engineering

Abstract

To evaluate muscle function accurately, it is necessary to simultaneously measure electromyogram (EMG) and mechanomyogram (MMG). We have developed an MMG/EMG hybrid transducer system that can simultaneously measure displacement-MMG (dMMG) and EMG, and reported that the dMMG and EMG measurements reflect muscle strength during dynamic exercise. The analysis of dMMG and EMG in our previous studies only calculated the total power spectrum obtained from discrete Fourier transform (DFT). Using this method of analysis, however, it is difficult to present information on muscle contraction in real time during exercise because of high computational cost due to huge amount of computation by DFT. In the present study, we propose a simplified method to evaluate muscle contraction during dynamic exercise by directly processing dMMG and EMG in the time domain. We adapted the dMMG/EMG data during recumbent bicycle pedaling obtained in our previous study to perform time-domain analysis. The novel time-domain analysis yielded equivalent results as those of previous analysis, and reflected muscle contraction during dynamic exercise. In addition, because dMMG and EMG by the proposed analysis increased with load increase during prolonged pedaling, it may be suitable for real-time monitoring of muscle function. The proposed method not only accurately measures muscle function during dynamic exercise in real time but also has a significantly lower computational cost.

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Research works printed but not linked: 3

  1. Orizio C: Muscle sound: bases for the introduction of a mechan- omyographic signal in muscle studies. Crit Rev Biomed Eng. 21(3), pp. 201-243, 1993.
  2. Perry SR, Housh TJ, Johnson GO, Ebersole KT: Mechanomyog- raphy, electromyography, heart rate, and ratings of perceived ex- ertion during incremental cycle ergometry. J Sport Med Phys Fit. 41(2), pp. 183-188, 2001.
  3. Shinichi FUKUHARA, et al: Simpli ed Real-time Monitoring of Muscle Contraction (191) pp. 19-25, 2001.

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Authors
Fukuhara, S., & Oka, H.
Affiliations
  • Kawasaki University of Medical Welfare (JP)
  • Okayama University (JP)
Venue
Advanced Biomedical Engineering
Published
2019
Volume
8
Issue
0
Pages
185-192
ISSN
2187-5219 (ISSN-L)
OpenAlex
W2994968016
Cited by
10
References
28
Citations by year
2025: 1 · 2023: 2 · 2022: 3 · 2021: 4
FWCI
0.62
Type
journal article
Language
en
Open access
Locations
Advanced Biomedical Engineering (publishedVersion)
Funders
Japan Society for the Promotion of Science (19K19967, 17K01360)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Muscle activation and electromyography studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Physical Sciences › Engineering › Biomedical Engineering › Mechanics and Biomechanics Studies
Keywords
mechanomyogram, electromyography, dynamic exercise, time-domain analysis, muscle strength, computational complexity reduction

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