Improved Electromyogram Recording Technique using Fine Wire Electrodes during Rapid and Ballistic Movement

DOI 3 Citations 19 References
  • KANEKO Fuminari
    Neuromuscular Assistive Technology Group, Institute for Human Science and Biomedical Engineering, National Institute of Advanced Industrial Science and Technology
  • MASUDA Tadashi
    Neuromuscular Assistive Technology Group, Institute for Human Science and Biomedical Engineering, National Institute of Advanced Industrial Science and Technology
  • KURUMADANI Hiroshi
    Institute of Health Sciences, School of Medicine, Hiroshima University
  • MURAKAMI Tsuneji
    Institute of Health Sciences, School of Medicine, Hiroshima University
  • YAMANE Masahito
    Hiroshima Toyo Carp Co., Ltd.

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Other Title
  • 急速な運動の動作分析を目的としたワイヤ電極による筋電図記録方法の改良

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Abstract

The present study investigated to suggest the way to record electromyographic (EMG) data without motion artifact using fine wire electrodes during rapid and ballistic movement like a throwing. EMG was recorded with the fine wire electrode from the supraspinatus of a university baseball pitcher. EMG from the middle deltoid was recorded using active surface electrodes. Throwing phases were divided from digital video images. The breakthrough point in EMG recording during throwing was to employ the spring clamp, which was connected directly to the buffer amplifier, to put the fine wire electrode. This solution produced the fine EMG recording with less motion artifact. Power spectrum densities of the EMGs from both of middle deltoid and supraspinatus were similar figures to the power spectrum density of the EMGs recorded during manual muscle testing. It was recognized that our improved technique of electromyogram recording with 70 Hz low cut filter was valuable for recording of temporal dynamic alterations of individual muscle activity during rapid and ballistic movement.

Journal

  • Physical Therapy Japan

    Physical Therapy Japan 30 (5), 280-287, 2003-08-20

    Japanese Society of Physical Therapy

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