三维步态分析对下肢生物力学变化的重测信度研究  

Test-retest reliability of lower extremity biomechanics by three-dimensional gait analysis

作　　者：王铁强 王晶[1] 张旻[1] 王学宗[1] 赵咏芳[1] Wang Tieqiang;Wang Jing;Zhang Min(Institute of Orthopedics&Traumatology,Shanghai Academy of Traditional Chinese Medicine,Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine,Shanghai 201203,China)

机构地区：[1]上海中医药大学附属曙光医院骨伤科研究所,上海201203

出　　处：《中国康复》2018年第6期486-489,共4页Chinese Journal of Rehabilitation

基　　金：国家自然科学基金青年项目(81503592;81503598);上海市卫生和计划委员会科研课题青年项目(20154Y0176)

摘　　要：目的:观察健康人在步行过程中下肢运动学、动力学、地面反作用力以及表面肌电信号的重测信度。方法:采用VICON (NEXUS 1.8.5)三维步态分析系统及NORAXON无线表面肌电图测试13名健康人步行过程中下肢运动学、动力学、地面反作用力以及表面肌电信号的重测信度。采用组内相关系数(ICC)及测量标准误(SEM)比较两次测试结果的相对信度与绝对信度。结果:步行过程中步速、下肢运动学、动力学、地面反作用力以及表面肌电信号均具有良好的重测信度ICC 0.78～0.96,运动学参数测量标准误SEM%为4.18～15.6,动力学参数SEM%为3.31～21.82,地面反作用力SEM%为1.70～16.67,表面肌电信号SEM%为8.00～11.11。结论:三维步态分析系统结合表面肌电图可用于评估步行时下肢运动学、动力学、地面反作用力以及表面肌电信号,且具有良好的重测信度。Objective:To determine the test-retest reliability of kinetics,kinematics,ground reaction force(GRF)and the surface electromyography(sEMG)signal during gait in healthy subjects.Method:Kinetics,kinematics,GRF and the sEMG signals of 13 healthy subjects were collected by VICON(NEXUS 1.8.5)three-dimensional gait analysis system,AMTI force plates and NORAXON wireless sEMG.The indicators of test-retest reliability of kinetics,kinematics,GRF and the sEMG signals were intraclass correlation coefficient(ICC)and standard error of measurement(SEM),and they were used to analyze the test-retest reliability between those two sessions.Results:The test-retest reliability of walking speed,kinetics,kinematics,GRF and the sEMG signals was modest,and the value of ICC was from 0.78 to 0.96.The SEM%of kinematics,kinetics,GRF,and sEMG ranged from(4.18-15.6),t3.31-21.82,1.70-16.67,and 8.00-11.11 respectively.Conclusion:The three-dimensional gait analysis and sEMG systems were presented to be a reliable and valid method for measuring kinetics,kinematics,GRF and the sEMG signal during gait.

关 键 词：三维步态分析 下肢 运动学 动力学 地面反作用力 信度 

分 类 号：R49[医药卫生—康复医学]