基于sEMG的双人协作转运患者下楼场景肌肉疲劳实验研究  

Research on Muscle Fatigue Experiment in the Scene of Patients for Emergency Transport Going Downstairs by Two Persons Based on sEMG

作　　者：李博[1] 秦旭东 宋嘉明 LI Bo;QIN Xu-dong;SONG Jia-ming(Faculty of Art and Design,Xi'an University of Technology,Shaanxi,Xi'an 710054,China)

机构地区：[1]西安理工大学艺术与设计学院,西安710054

出　　处：《人类工效学》2024年第5期58-65,共8页Chinese Journal of Ergonomics

基　　金：国家社会科学基金一般项目(202200573);西安市科技计划软科学项目(23RKYJ0054)。

摘　　要：目的为有效规避在紧急就医情况下,双人协作转运患者下楼过程的作业人员,因肌肉疲劳引发搬抬担架不平稳而使患者二次受伤的风险,需量化分析双人协作转运患者下楼过程的肌肉疲劳发展状况,为紧急就医折叠担架的结构改良设计提供实验基础。方法通过设计搭建测试用实物原型,模拟双人协作转运患者下楼的实验场景,招募4名被试参加实验,测量双人协作方式搬抬60 kg和80 kg两种重物下楼时,被试双侧上臂肱桡肌、肱二头肌和肱三头肌群表面肌电活动产生的数据变化值,经过数据处理和统计分析流程,得出双人协作转运不同重量时,被试上臂三个肌群肌电数据的均方根值(RMS)和中位频率(MF)数据。结果相同环境下双人协作转运患者下楼过程,搬抬80 kg下楼的实验总耗时和被试能坚持搬抬的楼层数都小于搬抬60 kg下楼时;上臂肌群中肱二头肌的疲劳发展最快;远离楼梯扶手侧的被试比靠近楼梯扶手处的被试疲劳发展的更快。结论患者体重的差异显著影响双人协作转运患者下楼过程的肌肉疲劳发展,应注意此类作业时上臂肱二头肌和肱桡肌的疲劳累积,尤其要关注远离楼梯扶手侧人员的上肢肌肉疲劳累积。Objective The purpose is to understand the development of muscle fatigue in the scene of two person collaborative transportation of patients going downstairs,to avoid muscle fatigue causing instability in the transportation process and resulting in secondary injury to patients,and to provide experimental basis for the improvement design of stair stretchers.Methods By designing a simulated scenario of two person collaborative transportation of patients downstairs,four participants were recruited to participate in the experiment.The changes in the electromyographic activity of the brachioradialis,biceps,and triceps muscles in the lower upper arm were measured under two different body weights of 60 kg and 80 kg in a two person collaborative manner.Then,the root mean square(RMS)and median frequency(MF)of these Results three muscle groups were analyzed under different body weights.At 80 kg,the completion time and the number of layers persisted in the experiment were both less than 60 kg;The fatigue development of the biceps muscle is the fastest when the patient is transported downstairs in a collaborative manner by two people;The subjects who were far away from the handrail of the stairs developed fatigue faster than those who were close to the handrail of the stairs.Conclusion The weight of patients significantly affects the development of muscle fatigue in two person cooperative transportation patients during downstairs work.Attention should be paid to the accumulation of fatigue in the biceps and brachioradialis muscles during such work,especially in personnel far from the handrail side of the stairs.

关 键 词：职业健康 人因工程 SEMG 上肢肌肉疲劳 双人协同作业 紧急就医担架 

分 类 号：X914[环境科学与工程—安全科学] R135[医药卫生—劳动卫生]