摘要
背景:具体研究慢跑时足与地面相互作用力对于深入了解人体运动的基本规律具有重要意义。目的:检测68名大学生慢跑时的动态足底压力分布。设计、时间及地点:单一样本设计,于2009-03在天津师范大学体育科学学院完成。对象:68名男性大学生,无足部畸形和足部创伤史,足踝关节活动正常。方法:采用比利时Footscan USB2平板式足底压测试系统对68名在校大学生进行动态足底压力测试。每位受试者以正常步态5m/s的速度慢跑,测试3次。足底压力分布解析系统可获得完整步态周期的足底压力分布图,数据采集与分析采用配套软件footscan SOFTWARE7.0,分析过程将足底分为10个区域:第1趾骨、第2～5趾骨、第1跖骨、第2跖骨、第3跖骨、第4跖骨、第5跖骨、足弓、足跟内侧和足跟外侧。主要观察指标:受试者慢跑过程中足底压力、压强、时相、冲量。结果:受试者足底应力-时间曲线呈明显的单峰型;足部最大压强部位在第2跖骨,各部位冲量由大到小依次为第3跖骨、第1跖骨、足跟、第1趾骨、第4跖骨、第5跖骨、第2～5趾骨、足弓;左右双足的分布规律基本一致。受试者慢跑时右足第2跖骨、第1跖骨、第1趾骨的压强大于左足,差异有显著性意义;整足接触阶段、离地阶段占支撑时期的90%,压力中心在足前掌中部较为密集,脚掌处的受力时间较长;右足整足接触阶段大于左足,差异有显著性意义。足部最大冲量部位在第2跖骨,各部位冲量由大到小依次为第1跖骨、第3跖骨、第1趾骨、足跟、第4跖骨、足弓、第2～5趾骨、第5跖骨;左右双足的分布规律基本一致。右足冲量值大于左足,同时第2跖骨、第1跖骨、第1趾骨的冲量值大于左足,差异有显著性意义。结论:大学生慢跑时,足部最大压强部位在第2跖骨,压力中心在足前掌中部较为密集,足部最大冲量部位在第2跖骨,前掌第1,2,3跖骨前端承担了大部分的冲量。提示慢跑时足掌中部易发生运动损伤,应注意锻炼时鞋的选择。
BACKGROUND： The specific research on the interaction between feet and ground when jogging, plays an important role for a deeper understanding of the basic laws of human motion. OBJECTIVE： To test dynamic foot pressure distribution during jogging of 64 undergraduates. DESIGN, TIME AND SETTING： A single sample design, the experiment was carried out in Tianjin Normal University Sports Institute in March 2009. PARTICIPANTS： A total of 68 male college students, without history of foot traumatic or deformities and with normal ankle joint, were involved in this study. METHODS： Totally 68 university students were analyzed by the Footscan USB2 system （RSscan, Belgium） when jogging at normal gait （5 m/s）. Dynamic foot pressure was determined three times. Analysis of foot pressure distribution system could gain a complete gait cycle of foot pressure distribution, data acquisition and analysis software used footscan SOFTWARE7.0, foot process of analysis was divided into 10 regions： the first phalange, the second to the fifth phalanges, the first metatarsal, the second metatarsal, the third metatarsal, the fourth metatarsal, the fifth metatarsal, arch, medial heel and lateral heel. MAIN OUTCOME MEASURES： Foot pressure, intensity of pressure, force interval and impulse when jogging. RESULTS： The foot stress-time curve showed a single peak; foot maximum pressure located at the second metatarsal, the site of impulse descending order was the third metatarsal, the first metatarsal, heel, the first phalange, the fourth metatarsal, the fifth metatarsal, the second to the fifth phalange, arch; the distribution of both feet was similar. The pressure of right foot in the second metatarsal, the first metatarsal and the first phalange was significantly greater than the left foot; The contact phases of the full foot and deport from ground occupied 90% of support time, the pressure center was densely in the middle of half sole, the fore interval of sole was long. The contact time of right foot was significantly larger than left foot. The biggest impulse was the site of the second metatarsal, the order from great to small was the first metatarsal, the third metatarsal, the first phalange, heel, the fourth metatarsal, arch, the second to the fifth phalange, the fifth metatarsal; the distribution of both feet was similar. The impulse of right foot was greater than left foot, while the impulse of the second metatarsal, the first metatarsal and the first phalange were greater than left foot, the difference had statistical significance. CONCLUSION： The largest pressure part is the second metatarsal when jogging, the pressure center in the foot locates in the middle of half sole, and the largest impulse is the second metatarsal, most of the impulse focus on the front end of the first to the third metatarsals of the half sole. It is indicated that the middle part of the footpad would be injured easily when jogging, so we should pay attention to the selection of shoes when exercising.
出处
《中国组织工程研究与临床康复》
CAS
CSCD
北大核心
2009年第46期9109-9112,共4页
Journal of Clinical Rehabilitative Tissue Engineering Research
