皮膚冷却刺激下での中殿筋低負荷トレーニング効果と筋活動変化 Changes in Muscle Activity of the Gluteus Medius and Low-Load Training Effects Induced by Skin Cooling Stimulus

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著者

    • 松田 憲亮 MATSUDA KENSUKE
    • 国際医療福祉大学 福岡リハビリテーション学部 理学療法学科 Department of Physical Therapy, Fukuoka School of Rehabilitation Sciences, International University of Health and Welfare
    • 永井 良治 NAGAI YOSHIHARU
    • 国際医療福祉大学 福岡リハビリテーション学部 理学療法学科 Department of Physical Therapy, Fukuoka School of Rehabilitation Sciences, International University of Health and Welfare
    • 中原 雅美 NAKAHARA MASAMI
    • 国際医療福祉大学 福岡リハビリテーション学部 理学療法学科 Department of Physical Therapy, Fukuoka School of Rehabilitation Sciences, International University of Health and Welfare
    • 金子 秀雄 KANEKO HIDEO
    • 国際医療福祉大学 福岡リハビリテーション学部 理学療法学科 Department of Physical Therapy, Fukuoka School of Rehabilitation Sciences, International University of Health and Welfare

抄録

〔目的〕皮膚冷却刺激下での中殿筋低負荷トレーニング効果と筋活動変化を検討することである.〔対象〕健常成人男性32名を対象とした.〔方法〕対照群と皮膚冷却群に分け,低負荷での股関節外転運動からなるトレーニングを6週間実施した.隔週で等尺性股関節外転最大筋力と中殿筋の表面筋電図を測定した.皮膚冷却群では最大随意収縮時および最大随意収縮時を基準としてその30%の負荷量時の積分値と平均周波数を測定し,トレーニング開始時を100%として正規化し比較した.また,冷却部位の皮下組織厚,皮膚表面,深部組織温度を計測した.〔結果〕等尺性最大筋力は皮膚冷却群で4~6週後有意に増加した.筋積分値は6週後,有意に増加したが,平均周波数の変化は認められなかった.〔結語〕皮膚冷却刺激下での中殿筋低負荷トレーニングでは,有意な筋力増強効果が認められた.筋力増強には皮膚冷却刺激による運動単位動員の促進とtype I線維における筋活動特異性や運動強度が反映されていることが示唆され,type II線維の活動増加については判別できなかった.<br>

[Purpose] The purpose of this study was to investigate the effect of low-load training of the gluteus medius with skin cooling stimulus (SCS) on its muscle strength and activity. [Subects] The subjects were 32 healthy adult males with a mean age of 21.2 years. [Method] The subjects were divided into a SCS group and a control group, and carried out hip joint abduction exercises at a low load for 6 weeks. The maximum strength of isometric hip abduction and surface EMG of the gluteus medius were measured every other week. Integrated EMG and the mean power frequency were calculated at maximum isometric voluntary contraction (MIVC) and a load of 30% MIVC, and the results were normalized and compared with the values obtained at the start of the exercises. In addition, we measured subcutaneous skin thickness, and skin surface and deep tissue temperatures. [Results] MVIC significantly increased in the SCS group after 4 weeks of training in the SCS group. There was a significant increase in iEMG after 6 weeks of training, but no changes were found in mean power frequency. [Conclusion] We found low-load training of the gluteus medius with SCS had a significant muscle strengthening effect. We suggest exercise intensity, muscle activity characteristics of type I fibers and promotion of motor unit recruitment through skin cooling the muscle were reflected in the increase in muscle strength; however, we could not determine whether an increase in type II muscle fiber activity was involved.<br>

収録刊行物

  • 理学療法科学

    理学療法科学 27(1), 81-85, 2012-02-20

    理学療法科学学会

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各種コード

  • NII論文ID(NAID)
    10030483295
  • NII書誌ID(NCID)
    AN10472896
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13411667
  • NDL 記事登録ID
    023554549
  • NDL 請求記号
    Z7-1893
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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