异构步道中下肢肌群不同时相的表面肌电特性  

Surface electromyography characteristics of lower limbs in heterogeneous gait environment

作　　者：张鹏 张峻霞[1,2] Zhang Peng;Zhang Junxia(School of Mechanical Engineering,Tianjin University of Science&Technology,Tianjin 300222,China;Tianjin Key Laboratory of Integrated Design and Online Monitoring for Light Industry and Food Engineering Machinery and Equipment,Tianjin University of Science&Technology,Tianjin 300222,China)

机构地区：[1]天津科技大学机械工程学院,天津市300222 [2]天津市轻工与食品工程机械装备集成设计与在线监控重点实验室,天津科技大学,天津市300222

出　　处：《中国组织工程研究》2021年第36期5814-5820,共7页Chinese Journal of Tissue Engineering Research

基　　金：天津市科技支撑计划资助项目(14ZCZDSY00010),项目负责人:张峻霞;2019年天津市研究生科研创新项目(2019YJSB014),项目负责人:张鹏。

摘　　要：背景:人体行走与下肢表面肌电信号变化密切相关,但是异构步道环境下的肌电信号差异性没有深入研究。目的:对异构步道环境的下肢表面肌电信号差异性进行量化分析,研究异构步道中下肢肌群在不同时相的肌肉特性。方法:招募20名健康男性作为受试者,分别采集在直道、弯道、坡道和楼梯4种异构步道环境下自然行走的下肢表面肌电信号,将1个完整步态周期分为4个时相:第一双支撑相阶段阶段(0%-12%)、单支撑相阶段阶段(13%-48%)、第二双支撑相阶段(49%-60%)和摆动相(61%-100%)。通过单因素方差分析研究在不同环境行走的肌肉激活时序和不同时相下肢表面肌电信号差异性。研究方案经天津科技大学研究伦理委员会批准。结果与结论:(1)研究表明,较于直道,在弯道时主要通过髋关节的股二头肌、踝关节的内侧腓肠肌和胫骨前肌做功完成转弯;在上楼和上坡时,单支撑相阶段,股外侧肌和股内侧肌的差异性变化最明显(P<0.05),肌肉力明显增大;第二双支撑相阶段,内侧腓肠肌的幅值明显增大;在下楼和下坡时,第一双支撑相阶段,需要股外侧肌和股内侧肌施加额外的助力,在单支撑相阶段,内侧腓肠肌和半腱肌的幅值显著增大,在第二双支撑相阶段,内侧腓肠肌的幅值显著减小;(2)研究结果可为下肢康复助行器控制系统的研发提供参考价值。BACKGROUND:Human walking is closely related to the changes of the surface electromyography signal of the lower limbs,but the difference of electromyography signal under the heterogeneous gait environment has not been studied in depth.OBJECTIVE:To quantitatively analyze the differences of surface electromyography signals of lower limb muscles in heterogeneous gait environments,and study muscle characteristics of lower limb muscles in different phases in heterogeneous footpaths.METHODS:Twenty healthy male subjects were recruited.The surface electromyography signals of lower limb muscles were collected in the environment of straight road,curve road,ramp,and stairs.A complete gait cycle was divided into four phases:the first dual support phase(0%-12%),the single support phase(13%-48%),and the second dual support phase(49%-60%)and swing phase(61%-100%).The muscle activation timing and difference of surface electromyography signal in different gait environments were studied through one-way analysis of variance.This study was approved by the Research Ethics Committee of Tianjin University of Science&Technology.RESULTS AND CONCLUSION:(1)The study showed that compared with the straight path environment,in the process of making turn,the internal and external rotation muscles(Biceps Femoris,Gastrocnemius Medialis,Tibialis Anterior)of hip joint and ankle joint were used to complete the turn.When going upstairs and uphill,in the stage of single support phase,Vastus Lateralis and Vastus Medialis had the most significant difference(P<0.05),and muscle strength increased significantly.In the second double support phase,the amplitude of Gastrocnemius Medialis increased significantly.When going downstairs and downhill,in the first dual support phase,Vastus Lateralis and Vastus Medialis were required to exert additional assistance.In the single support phase,the amplitudes of Gastrocnemius Medialis and Semitendinosus were significantly increased.In the second double support phase,the amplitude of Gastrocnemius Medialis decreased sig

关 键 词：步态分析 表面肌电信号 激活时序 肌电信号差异性 

分 类 号：R459.9[医药卫生—治疗学] R496[医药卫生—临床医学]