农药施药者运动性疲劳调查  

The investigation of exercise-induced fatigue on pesticide spraying operation

作　　者：迟明梅[1] 仇冬[1] 何雄奎[2] 

机构地区：[1]烟台南山学院工学院食品科学与工程系,265713 [2]中国农业大学理学院

出　　处：《中华劳动卫生职业病杂志》2014年第11期839-841,共3页Chinese Journal of Industrial Hygiene and Occupational Diseases

摘　　要：目的 应用表面肌电（surface electromyography,sEMG）信号和心率特征对农药施药者施药过程中肌体的运动性疲劳进行评价.方法 对19例背负3WS-16型手动喷雾器正在进行农药施药作业的施药者,用便携式肌电图仪全程监测右侧斜方肌、肱二头肌、指伸肌和指屈肌的sEMG信号,同时用动态血压监护仪测量农药施药者的心率,分析中值频率和心率特征的变化.结果 农药施药作业为轻级劳动强度,随着施药作业时间的延长,右侧斜方肌、肱二头肌、指伸肌和指屈肌的中值频率均有下降趋势,差异有统计学意义（P＜0.05）;自农药施药作业后8 min至施药结束,运动肌体均处于轻微疲劳状态.结论 通过测定sEMG信号和心率来评价农药施药者施药过程中肌体的运动性疲劳是可行的.Objective To evaluate the exercise-induced fatigue in operators during pesticide spraying based on surface electromyography （sEMG） signals and heart rate.Methods The sEMG signals were recorded from the right trapezius,biceps brachii,extensor digitorum,and flexor digitorum of 19 operators by portable electromyography units during pesticide spraying using 3WS-16 manual sprayers.Meanwhile,the heart rate of operators was measured by the ambulatory blood pressure monitoring system.The changes in median frequency and heart rate were analyzed.Results Pesticide spraying was defined as low-intensity labor.The median frequency of the right trapezius,biceps brachii,extensor digitorum,and flexor digitorum decreased significantly as pesticide spraying went on （P＜0.05）.The body remained in a state of slight fatigue from 8 min after pesticide spraying began to the end of the operation.Conclusion The degree of exercise-induced fatigue of operators can be evaluated based on sEMG signals and heart rate during pesticide spraying.

关 键 词：疲劳 肌电描记术 心率 

分 类 号：R87[医药卫生—运动医学]