油锯动静态特性对操作者手臂肌肉疲劳的综合效应(I)──重量、手把直径和手臂姿势对掌长肌收缩的影响  

Effects of Chain Saw Dynamic and Static Characteristics on Fatigue of Arm Muscles(I) ——Effects of chain saw weight,grip diameter and arm posture on activity of palmaris longus muscle

作　　者：李文彬[1] 安静贤 崔文彬 王德明[1] 

机构地区：[1]北京林业大学森林工业学院

出　　处：《北京林业大学学报》1997年第3期45-51,共7页Journal of Beijing Forestry University

基　　金：霍英东教育基金

摘　　要：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．In this article,the effects of chain saw weight, grip diameter and arm posture on the activities of right palmaris longus muscle are studied by means of surface electromyography.The results indicate that the effect of weight and diameter is significant,the effect of arm posture is not significant. Three regression models are conducted:①the model between weight and EMG power,②the model between grasping force and weight,③the model between grasping force and weight.Physiological rational chain saw weight for the Chinese should be ranged between 4～6 kilograms.

关 键 词：表面肌电图 掌长肌 油锯 手把直径 

分 类 号：S776.311[农业科学—森林工程]