装具を用いて母指と示指を対立肢位に固定した時の運動イメージが脊髄神経機能の興奮性に与える影響

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  • 前田 章裕
    喜馬病院　リハビリテーション部
  • 福本 悠樹
    青森県立保健大学大学院　健康科学研究科 関西医療大学保健医療学部　臨床理学療法学教室
  • 文野 住文
    関西医療大学保健医療学部　臨床理学療法学教室 関西医療大学大学院　保健医療学研究科
  • 鈴木 俊明
    関西医療大学保健医療学部　臨床理学療法学教室 関西医療大学大学院　保健医療学研究科

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タイトル別名
  • Influence on the excitability of spinal neural function of motor imagery in the thumb and index finger opposition position with orthosis
  • ソウグ オ モチイテ ボシ ト ジシ オ タイリツシイ ニ コテイ シタ トキ ノ ウンドウ イメージ ガ セキズイ シンケイ キノウ ノ コウフンセイ ニ アタエル エイキョウ

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<p>In this study, we examined the effect on the excitability of the spinal neural function of motor imagery in the thumb and index finger opposition position with opponens orthosis. We analyzed 10 healthy subjects. In the motor imagery with orthosis trial, F-waves were recorded during relaxation (rest trial). Subsequently, the subjects practiced isometric thenar muscle activity at 30% maximum voluntary contraction using visual feedback for 1 min. Then, F-waves were recorded while the subjects performed motor imagery in the opposition position with orthosis (image with orthosis trial). After the motor imagery task, F-waves were recorded during relaxation (post-image trial). In the motor imagery without orthosis trial, F-waves were recorded during rest, image without orthosis, and post-image trials on another day. The relative values of persistence and F/M amplitude ratio during the image with orthosis trial were significantly higher than those of the without orthosis trial. Motor imagery with proprioceptive input can increase the excitability of spinal neural function. In clinical settings, it is important to perform motor imagery in a position similar to that during actual activity.</p>

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