慢跑鞋前掌屈曲刚度对跑步经济性和下肢生物力学特征的影响

发布时间：2018-04-22 05:23

本文选题：跑步经济性 + 慢跑鞋前掌屈曲刚度　；参考：《北京体育大学》2017年硕士论文

【摘要】：研究目的:从能量代谢及下肢关节做功等角度综合分析慢跑鞋前掌屈曲刚度对跑步经济性的影响及机制,为跑鞋的设计制造及消费者选鞋提供参考。研究方法:通过改变中底凹槽的密度和深度制作5双不同屈曲刚度的慢跑鞋(A、B、C、D、E鞋的屈曲刚度依次减小),鞋码为欧码41码。选取11名青年男性大学生。第一阶段,进行无氧阈强度测试,测出每一位受试者自己适应的个体跑步经济性速度,在跑台(h/p/cosmos Mercury4.0,Germany)上完成,通过Cortex气体代谢分析系统(Metalyzer 3B,Cortex Biophysik,Leipzig,Germany)进行气体分析,正式实验室选用低于无氧阈强度0.8km/h的速度进行测试。测试第二阶段为跑步经济性测试,按随机顺序测试穿每双鞋慢跑时的耗氧量。测试第三阶段,应用三维测力台(Kistler 9281CA,Switzerland,采样频率1000Hz)和8镜头红外高速运动捕捉系统(Motion Analysis Raptor-4,USA,200Hz)同步记录穿不同鞋慢跑过程中的运动学和动力学参数,速度采用每人的个体跑步经济性测试速度。采用单因素重复测量方差分析统计慢跑鞋前掌屈曲刚度对耗氧量及下肢关节功等参数的影响。研究结果:慢跑鞋前掌屈曲刚度对跑步经济性的影响表现出统计学差异(P=0.013),A、E鞋均显著大于C鞋和B鞋。鞋前掌屈曲刚度对下肢跖趾关节的正功(P=0.001)、负功(P0.001)、净功(P0.001)以及关节角度、力矩均表现出统计学差异,对踝关节角度也表现出统计学差异,但对髋关节和膝关节的生物力学参数没有影响。研究结论:(1)慢跑鞋前掌屈曲刚度对跑步经济性的影响呈现倒“U”型趋势,适当屈曲刚度的跑鞋比刚度过大或过小的跑鞋有利于提高跑步经济性;(2)慢跑鞋前掌屈曲刚度对跖趾关节机械功的影响呈现“U”型趋势,适当前掌屈曲刚度的跑鞋能有效的减少跖趾关节的能量流失,但对髋关节、膝关节和踝关节的机械功影响不显著;(3)慢跑鞋前掌屈曲刚度对跖趾关节机械功的影响可能是其影响跑步经济性的一部分原因。
[Abstract]:Objective: to analyze the effect and mechanism of the flexion stiffness of front palms of jogging shoes on running economy from the angle of energy metabolism and joint work of lower limbs, so as to provide reference for the design and manufacture of running shoes and the choice of shoes for consumers. Methods: by changing the density and depth of the midsole grooves, 5 pairs of jogging shoes with different flexion stiffness were made. Eleven young male college students were selected. In the first stage, the anaerobic threshold strength test was carried out to measure the economic running speed of each individual to which each of the subjects adapted himself, and was completed on the platform / h / p / cosmos Mercury4.0 / Germany.The gas analysis was carried out through the Cortex gas metabolism analysis system (Metalyzer 3B Cortex Biophysiktr LeipzigGermany). The formal laboratory selected a speed lower than the anaerobic threshold strength 0.8km/h to test. The second stage was a running economy test, which measured the oxygen consumption of each pair of shoes during jogging in random order. In the third phase of the test, the kinematics and dynamics parameters of different jogging shoes were recorded synchronously by using the 3-D force measuring platform Kistler 9281CA switch land (sampling frequency 1000Hz) and the 8-lens infrared high-speed motion capture system (Motion Analysis Raptor-4USAA 200Hz). The speed is measured by the individual running economy of each person. Single factor repeated measurement variance analysis was used to analyze the effect of flexion stiffness on oxygen consumption and joint work of lower limbs in jogging shoes. Results: the effect of flexion stiffness of front palms of jogging shoes on running economy was significantly higher than that of C shoes and B shoes. The flexion stiffness of the front metatarpal of the shoe showed statistical difference on the positive work of the metatarsophalangeal joint of the lower extremity P0. 001, negative work of P0. 001, P0. 001) and the angle and torque of the joint, and the angle of the ankle joint was also statistically different. But there was no effect on the biomechanical parameters of hip and knee joint. Conclusion: (1) the effect of flexion stiffness of front palms of jogging shoes on running economy shows a trend of inverted "U" shape. Running shoes with proper flexion stiffness were more advantageous to improve running economy than those with large or too small flexion stiffness. The effect of flexion stiffness on the mechanical work of metatarsophalangeal joint showed a "U" trend, and the effect of flexion stiffness on the mechanical work of metatarsophalangeal joint showed a "U" trend. Running shoes with proper flexion stiffness can effectively reduce the loss of energy in the metatarsophalangeal joint, but for the hip joint, The effect of the flexural stiffness of the front palmar of jogging shoes on the mechanical work of metatarsophalangeal joint may be a part of the reason that affects the economy of running.
【学位授予单位】：北京体育大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：G804.6

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