The Relationship between Peak Power of Isokinetic Exercise on a Step Ergometer and Muscle Activity Characteristics

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  • MIZUMOTO Atsushi
    Graduate School of Health Sciences, Sapporo Medical University
  • SHIMADA Hiroyuki
    Section for Health Promotion, Department of Health and Medical Care, Center for Development of Advanced Medicine for Dementia, National Center for Geriatrics and Gerontology
  • IHIRA Hikaru
    Graduate School of Health Sciences, Sapporo Medical University
  • Nomura Tomohiro
    Graduate School of Health Sciences, Sapporo Medical University
  • FURUNA Taketo
    Graduate School of Health Sciences, Sapporo Medical University
  • SUZUKAWA Megumi
    Department of Rehabilitation, Faculty of Health Sciences, University of Human Arts and Science

Bibliographic Information

Other Title
  • ステップエルゴメーターのアイソキネティック運動におけるピークパワーと筋活動特性との関連
  • ステップエルゴメーターのアイソキネテイック運動におけるピークパワーと筋活動特性との関連 : 表面筋電図周波数分析による検討
  • ステップエルゴメーター ノ アイソキネテイック ウンドウ ニ オケル ピークパワー ト キン カツドウ トクセイ ト ノ カンレン : ヒョウメンキンデンズ シュウハスウ ブンセキ ニ ヨル ケントウ
  • —Surface EMG Frequency Analysis—
  • ─表面筋電図周波数分析による検討─

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Description

[Purpose] The aim of this study was to examine the relationship between peak power of the lower extremities during isokinetic movement on a step ergometer and muscle activity characteristics using EMG frequency analysis of community-dwelling elderly adults. [Methods] Twelve elderly women (mean age 78.3 years) were measured for muscle power on a step ergometer (60 and 90 steps / minute), and surface electromyograms (EMG) of the lower extremities. EMG data was wavelet transformed and MPF (Mean Power Frequency), LF / TP (Low Frequency per Total Power) and HF / TP (High Frequency per Total Power) were calculated. [Results] The muscle power at 60 steps / min showed a significant correlation with the LF / TP of the tibialis anterior. MPF of the vastus medialis and tibialis anterior at 90 steps / min were higher than at 60 steps /min. [Conclusion] We speculate that fast-twitch muscles activity at 90 steps / min increases, therefore we consider that high speed movement is useful for preventing the sarcopenia.<br>

Journal

  • Rigakuryoho Kagaku

    Rigakuryoho Kagaku 27 (4), 411-415, 2012

    The Society of Physical Therapy Science

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