论文部分内容阅读
该文通过表面肌电图研究了油锯重量、手把直径和手臂姿势对掌长肌收缩强度的影响．结果表明，重量和手把直径对掌长肌收缩强度的影响很显著，而手臂姿势的影响不显著．通过回归分析求出了３个方程：①握持重量与掌长肌收缩功率的回归方程；②握持力与掌长肌收缩功率的回归方程；③握持重量与所需握持力的回归方程．中国人生理上的合理油锯手把直径和油锯重量分别为３０ｍｍ左右和４～６ｋｇ
In this paper, the effect of the weight of the saw, the diameter of the handlebar and the posture of the arm on the contractile strength of the palmaris longus muscle was studied by the surface electromyography. The results showed that the weight and the handlebar diameter had a significant effect on the contractile strength of the palmaris longissimus muscle, while the arm posture had no significant effect. Regression analysis obtained three equations: ① hold weight and palmar muscle contraction power regression equation; ② holding power and palmar muscle contraction power regression equation; ③ hold the weight and the required holding force regression equation. Physically reasonable Chinese sawn hand chain diameter and saw weight of about 30mm and 4 ~ 6kg