老年人搂膝拗步动作的下肢运动协调特征分析  

Analysis of Lower Limb Motor Coordination Characteristics During Brush Knee and Twist Step in Older Adults

作　　者：汤惠如 高庆 王疆娜 宋祺鹏[2] 张翠[3] 孙威[2] TANG Huiru;GAO Qing;WANG Jiangna;SONG Qipeng;ZHANG Cui;SUN Wei(School of Graduate Education,Shandong Sport University,Jinan 250100,China;School of Sports and Health,Shandong Sport University,Jinan 250100,China;Shandong Sports Science Research Center,Jinan 250100,China)

机构地区：[1]山东体育学院研究生教育学院,济南250100 [2]山东体育学院运动与健康学院,济南250100 [3]山东省体育科学研究中心,济南250100

出　　处：《医用生物力学》2022年第5期798-804,共7页Journal of Medical Biomechanics

基　　金：山东省自然科学基金项目(ZR2020QC091);国家自然科学基金项目(12102235,31700815);山东省重点研发计划项目(2019GSF108211,2020CXGC010902)。

摘　　要：目的探讨65岁以上健康老年人进行太极拳搂膝拗步动作时下肢运动的协调性和稳定性。方法30名太极拳练习者随机完成步行和搂膝拗步动作,采用Vicon三维动作捕捉系统收集下肢运动学数据。结果搂膝拗步动作时,矢状面关节角度和髋⁃膝和膝⁃踝关节相位值变换频繁,髋⁃膝和膝⁃踝关节的平均相对相角绝对值以及髋、膝关节平均标准差显著小于步行。结论与步行相比,太极拳搂膝拗步动作时髋⁃膝和膝⁃踝关节呈现出更协调稳定的关节间运动模式。太极拳锻炼可能会为老年人提供一种特定的协调训练方式,提高姿势稳定性,预防跌倒发生。Objective To explore the lower limb motor coordination and stability of older adults over 65 years old during Tai Chi brush knee and twist step.Methods A total of 30 Tai Chi practitioners randomly completed walking and brush knee and twist step.The lower limb kinematics data were collected by Vicon three⁃dimensional(3D)motion capture system.Results During brush knee and twist step,the joint angle in sagittal plane and continuous relative phase(CRP)values of hip⁃knee and knee⁃ankle joints during brush knee and twist step changed frequently.The mean absolute relative phase(MARP)for hip⁃knee and knee⁃ankle joint and the mean deviation phase(DP)for hip⁃knee joint were significantly lower than those during walking.Conclusions Compared with walking,the hip⁃knee and knee⁃ankle joints present a more coordinated and stable segment motion pattern during Tai Chi brush knee and twist step.Tai Chi exercise may provide a specific coordination training method for older adults,enhance posture stability and prevent falls.

关 键 词：老年人 跌倒 搂膝拗步 下肢协调 

分 类 号：R318.01[医药卫生—生物医学工程]