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2001 Fiscal Year Final Research Report Summary

Electromyographic power spectial anelysis during isometric contiaction of the brachial muscle

Research Project

Project/Area Number 12832066
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research InstitutionUniversity of Occupational and Environmental Health

Principal Investigator

HACHISUKA Kenji  University of Occupational and Environmental Health, School of Medicine, Professor, 医学部, 教授 (00129602)

Co-Investigator(Kenkyū-buntansha) UMEZU Yuichi  University of Occupational and Environmental Health, School of Medicine, Assiistant professor, 医学部, 講師 (50289584)
LDE Makoto  University of Occupational and Environmental Health, School of Medicine, Assiistant professor, 医学部, 講師 (70248590)
Project Period (FY) 2000 – 2001
Keywordsskeletal muscle / EMG / triceps brachii muscle / power speotial anslysio / muscle endurance / spinal cord injury / wheelchair marsthon
Research Abstract

Objective and Design : To investigate the endurance features of triceps brachii muscles in elite paraplegic wheelchair marathon athletes using the surface electromyographic power spectral analysis. Method : Electromyograms of the right triceps brachii muscles during isometric contraction at the level of 50% maximal voluntary contraction were obtained by using surface electrodes from 9 male elite paraplegic wheelchair marathon athletes and 6 male paraplegic non-athletes as a control. Outcome Measures : Median frequency (MF) and mean power frequency (MPF) in the electromyograms were calculated with a personal computer using the ME3000P Fast Fourier Transform spectrum analysis program. Pearson's correlation coefficients between MF and time and between MPF and time, and the rates of changes in MF and MPF were calculated. Results : MF and MPF decreased with time linearly. The negative slopes of MF and MPF were -8.9±4.6 and -9.7±4.6 %/min for the athletes, and -22.3±8.2 and -21.2±6.4 %/min for the controls, and the absolute values of the negative slopes in the athletes were significantly smaller than those in the controls (p<0.05). Conclusion : The electromyographic power spectral analysis revealed that the triceps brachii muscles in the athletes are more endurable because of a smaller decrease in MF and MPF.

  • Research Products

    (2 results)

All Other

All Publications (2 results)

  • [Publications] 荒川英樹, 中村健, 梅津祐一, 蜂須賀研二: "脊柱起立筋の筋疲労評価(第2報)-持続時間と周波数減少率を中心に-"リハビリテーション医学. 37巻10号. 676-678 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hideki Arakawa, Takeshi Nakamura, Yuichi Umezu, Kenji Hachisuka: "Spectral Electromyographic Fatigue Analysis of Back Muscles in Healthy Female during Trunk holding Test"The dapanese journal of Rehabilitation Medicine. Vol.37-10. 676-678 (2000)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2003-09-17  

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