Departmental Bulletin Paper 健常成人における筋収縮様式の違いによる把持力調整能力の比較 ─ 把持力調整能力測定機器iWakkaを用いた検討─
Comparison between the grip force adjustment capability and muscle contraction pattern in healthy adults: ─A study using iWakka device for the assessment of grip force adjustment capability─

佐藤, 彰紘  ,  金野, 達也  ,  矢﨑, 潔

Objective: This study aimed to clarify whether the difficulty of grip force adjustment is different according to the type of muscle contraction pattern.Methods: An iWakka device was used to assess grip force adjustment capability in 27 healthy adults. Mean error of the standard value of the iWakka device was considered to be the index for grip force adjustment capability. It was determined that the smaller the mean error, the better the adjustment capability. In this study, the mean errors of concentric and eccentric contractions in the dominant and non-dominant hands were compared and examined.Results: No significant difference was observed in the mean error between concentric and eccentric contractions. Furthermore, no significant difference was observed for concentric or eccentric contractions between the dominant and non-dominant hands. Conclusions: In the assessment of complex and slow grip force adjustment capability, there was no difference observed in the difficulty of a movement task with regard to the type of muscle contraction pattern. In addition, no difference in adjustment capability was observed between the dominant and non-dominant hands. Therefore, when the mobility of one hand is impaired, the grip force adjustment capability of the other handcould serve as an index of recovery.

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