中华劳动卫生职业病杂志
中華勞動衛生職業病雜誌
중화노동위생직업병잡지
CHINESE JOURNAL OF INDUSTRIAL HYGIENE AND OCCUPATIONAL DISEASES
2014年
11期
839-841
,共3页
疲劳%肌电描记术%心率
疲勞%肌電描記術%心率
피로%기전묘기술%심솔
Fatigue%Electromyoqraphy%Hear rate
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.
目的 應用錶麵肌電(surface electromyography,sEMG)信號和心率特徵對農藥施藥者施藥過程中肌體的運動性疲勞進行評價.方法 對19例揹負3WS-16型手動噴霧器正在進行農藥施藥作業的施藥者,用便攜式肌電圖儀全程鑑測右側斜方肌、肱二頭肌、指伸肌和指屈肌的sEMG信號,同時用動態血壓鑑護儀測量農藥施藥者的心率,分析中值頻率和心率特徵的變化.結果 農藥施藥作業為輕級勞動彊度,隨著施藥作業時間的延長,右側斜方肌、肱二頭肌、指伸肌和指屈肌的中值頻率均有下降趨勢,差異有統計學意義(P＜0.05);自農藥施藥作業後8 min至施藥結束,運動肌體均處于輕微疲勞狀態.結論 通過測定sEMG信號和心率來評價農藥施藥者施藥過程中肌體的運動性疲勞是可行的.
목적 응용표면기전(surface electromyography,sEMG)신호화심솔특정대농약시약자시약과정중기체적운동성피로진행평개.방법 대19례배부3WS-16형수동분무기정재진행농약시약작업적시약자,용편휴식기전도의전정감측우측사방기、굉이두기、지신기화지굴기적sEMG신호,동시용동태혈압감호의측량농약시약자적심솔,분석중치빈솔화심솔특정적변화.결과 농약시약작업위경급노동강도,수착시약작업시간적연장,우측사방기、굉이두기、지신기화지굴기적중치빈솔균유하강추세,차이유통계학의의(P＜0.05);자농약시약작업후8 min지시약결속,운동기체균처우경미피로상태.결론 통과측정sEMG신호화심솔래평개농약시약자시약과정중기체적운동성피로시가행적.
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.
