Effect of difficult finger movements on the excitability of the contralateral upper limb spinal neural function

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  • Sano Koichi
    Department of Rehabilitation, Myodani Hospital Graduate School of Health Sciences, Graduate School of Kansai University of Health Sciences
  • Kado Naoki
    Department of Physical Therapy, Kobe College of Rehabilitation and Welfare
  • Takahashi Yuki
    Department of Physical Therapy, Kobe College of Rehabilitation and Welfare
  • Maeda Takenobu
    Department of Physical Therapy, Kobe College of Rehabilitation and Welfare
  • Suzuki Toshiaki
    Graduate School of Health Sciences, Graduate School of Kansai University of Health Sciences

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Other Title
  • 難しい手指の運動が対側上肢脊髄神経機能の興奮性に及ぼす影響
  • 研究助成論文 関西理学療法学会 平成31年度研究助成論文 難しい手指の運動が対側上肢脊髄神経機能の興奮性に及ぼす影響
  • ケンキュウ ジョセイ ロンブン カンサイ リガク リョウホウ ガッカイ ヘイセイ 31ネンド ケンキュウ ジョセイ ロンブン ムズカシイ シュシ ノ ウンドウ ガ タイガワ ジョウシ セキズイ シンケイ キノウ ノ コウフンセイ ニ オヨボス エイキョウ

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Abstract

<p>The purpose of this study was to investigate changes in the excitability of the contralateral upper limb spinal nerve function during movements of the fingers of different difficulties using F-waves. The F-waves of twelve healthy subjects were measured at rest and during two motor tasks: Task 1 involved flexion and extension of the left fingers at a frequency of 1 Hz, and Task 2 involved two-ball clockwise rotation using the left fingers, which is a difficult movement. The amplitude F/M ratio, appearance frequency, and latency of the F wave were analyzed. The appearance frequency was found to be significantly increased in Task 2 compared to at rest and in Task 1. There was no significant difference in the amplitude F/M ratio between the two tasks. The latency of the two tasks was also the same. The promotion effect on the contralateral spinal nerve function accompanying movement of the finger in one direction may increase in a difficult exercise task.</p>

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