Different modulation pattern of spinal stretch reflex excitability in highly trained endurance runners

Tetsuya Ogawa*, Noritaka Kawashima, Shuji Suzuki, Kimitaka Nakazawa

*この研究の対応する著者

    研究成果: Article査読

    7 被引用数 (Scopus)

    抄録

    This study was undertaken to elucidate the impact of long-term physical training on the modulation of stretch reflex excitability. To this end, electromyographic activities of the soleus muscle in response to quick toe-up rotation were compared between highly trained endurance runners (n = 8) and non-trained control subjects (n = 9). We specifically focused on the stretch reflex modulation under different voluntary activation levels, from rest to pre-activated conditions (5, 10, 20, and 30% of the maximal). While the two groups showed similar modulation patterns of the stretch reflex responses, the extent of reflex modulation in accordance with the muscle pre-activation level was larger in the trained group. The present results therefore suggest a different modulation pattern of the stretch reflex responses with changing activation level between individuals with different physical background, and the enhancement of the responses in the trained individuals may particularly be advantageous in exerting high level muscle contraction.

    本文言語English
    ページ(範囲)3641-3648
    ページ数8
    ジャーナルEuropean Journal of Applied Physiology
    112
    10
    DOI
    出版ステータスPublished - 2012 10月

    ASJC Scopus subject areas

    • 公衆衛生学、環境および労働衛生
    • 整形外科およびスポーツ医学
    • 生理学(医学)

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