坐位作业腰部疲劳的肌电图研究  

STUDY OF EMG ON LOWER BACK FATIGUE IN SEDENTARY WORKING

作　　者：王生[1] 牛云彤[1] 王起恩[1] 李玲[1] 

机构地区：[1]北京医科大学劳动卫生教研室,中国武警医学院,北京矿务局总医院

出　　处：《工业卫生与职业病》1996年第4期205-207,共3页Industrial Health and Occupational Diseases

摘　　要：在实验室对受试者采取坐位时腰部肌肉疲劳的发生过程与肌电图的变化之间的关系进行了研究。结果表明，在不同的躯干角时，肌电图积分值（ＩＥＭＧ）均随坐位时间的延长呈现开始时略有上升，以后逐渐下降的趋势，且随躯干角增大，这种变化起义越明显，提示ＩＥＭＧ的这种变化反映了肌肉疲劳的发生发展过程，结合疲劳症状的发生情况，建议把ＩＥＭＧ值低于初始值（正常水平）时作为疲劳实际出现的时间。The relationship between the development of muscle fatigue on lower back and the change of EMG was studied on subjects who kept sedentary posture for a period of time. The results showed that the value of IEMG appeared a slight increase in early stage,but in the late stage the value showed a decreasing trend, and became more obvious with the enlargement of trunk angle , indicating that the change of IEMG can reflect the development of muscle fatigue. Combining with the symptom of fatigue, it may be recommended that the time when IEMG showed lower than the initial value can be taken as the critical point of the appearance of muscle fatigue.

关 键 词：疲劳 坐位作业 肌电图 

分 类 号：R135[医药卫生—劳动卫生] R741.044[医药卫生—公共卫生与预防医学]