太极拳搂膝拗步动作中膝关节生物力学的实验和仿真研究

发布时间：2018-07-10 06:28

本文选题：太极拳 + 有限元分析　；参考：《上海体育学院》2017年硕士论文

【摘要】：研究目的:太极拳运动对膝关节的健康有着积极作用,这可能与其独特的生物力学特征有关。本研究选取太极拳动作中较为典型的步伐动作(搂膝拗步),分析其运动学与动力学特征,结合有限元模型仿真,探讨其动作过程中的部分生物力学问题,并将其与慢跑、步行动作进行对比。研究方法:招募太极拳练习者,使用动作捕捉系统与三维测力台同步采集正常步行,慢跑和搂膝拗步动作的运动学和动力学数据。基于同一受试者的核磁共振图像,建立右侧膝关节的有限元模型并进行实验验证。将采集到的运动学与动力学数据作为边界和载荷条件,将三个动作的数据导入有限元模型,以计算和比较关节软骨和半月板的生物力学响应。研究结果:与步行和慢跑动作相比,搂膝拗步的运动模式有着更大的膝关节运动范围,地面反作用力峰值更小。有限元模拟表明,搂膝拗步动作对膝关节软骨与半月板产生的接触应力峰值更小,动作过程中应力峰值区域变化更大。研究结论:相对于慢跑与步行,搂膝拗步动作有着更大的关节运动范围,且半月板与软骨的接触应力峰值更小,峰值区域变化更大,太极拳对膝关节疾病的康复作用可能与其有关。搂膝拗步动作练习过程中如果动作不正确,有着较大的损伤风险。
[Abstract]:Objective: Taijiquan has a positive effect on knee joint health, which may be related to its unique biomechanical characteristics. In this study, some biomechanical problems in the course of Taijiquan are discussed by analyzing the kinematics and dynamics of Taijiquan, which is typical of the movement of Taijiquan, and combining with the simulation of finite element model, some biomechanical problems in the process of Taijiquan are discussed. The walking movements were compared. Methods: Taijiquan practitioners were recruited, and the kinematics and dynamics data of normal walking, jogging and knee-bending were collected simultaneously by motion capture system and three dimensional force table. Based on the MRI images of the same subject, the finite element model of the right knee joint was established and verified by experiments. The data of kinematics and dynamics were taken as boundary and load conditions. The data of three movements were introduced into the finite element model to calculate and compare the biomechanical responses of articular cartilage and meniscus. The results showed that compared with walking and jogging, the motion pattern of knee-taut movement had a larger range of knee motion, and the peak value of ground reaction force was smaller than that of walking and jogging. The finite element simulation shows that the contact stress peak of knee cartilage and meniscus is smaller and the change of stress peak region is larger during the movement. Conclusion: compared with jogging and walking, the motion of cuddle has a larger range of joint motion, and the peak value of contact stress between meniscus and cartilage is smaller, and the region of peak changes is larger than that of jogging and walking. The rehabilitation effect of Taijiquan on knee joint disease may be related to Taijiquan. If the action is not correct, there is a greater risk of injury.
【学位授予单位】：上海体育学院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：G852.11

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