健康大学生足底压力分布参数特征

Parameter Features of Foot Pressure in Healthy University Students

目的探讨健康大学生自然行走过程中峰力值（Max Force）、达峰力值时间（Time to Max Force）、冲量（Impulse）、负荷率（Load rate）等参数特征,为临床诊断、疗效评估、矫形处方和体育锻炼等提供依据。方法采用Footscan USB2平板式足底压测试系统,对82名健康大学生进行自然行走过程中动态足底压力测试。结果足跟内侧（Heel Medial）平均峰力值（MF）最大,其次是第2,3跖骨,足底平均峰力值较小的区域主要分布在第2-5趾（Toe2-5）和第5跖骨（Meta5）,且男、女分布规律一致。足底各区域达峰力值时间按照行走过程中足底接触地面顺序呈依次递增趋势,即达峰力值时间足跟〈足弓〈跖骨〈脚趾。行走过程中足跟的负荷率最大,尤其是足跟外侧（Heel Lateral）,男、女都表现出左足足跟负荷率大于右足足跟负荷率的现象。行走过程中足底冲量最大的区域主要分布在第2,3跖骨和足跟内侧,冲量较小的区域主要分布在第2-5趾、足弓以及第5跖骨。结论普通健康大学生足底压力特征与其他学者研究正常人或非糖尿病人的足底压力特征基本一致;行走过程中左右双足的平均峰力值、接触面积、冲量等参数都存在不同程度的差异,但男女左右双足的足底参数分布规律基本一致。

Objective To explore the peak value of foot plantar pressure and the time to max force and impulse and load rate during the natural walk about normal university students, and to provide evidence for diagnosis, treatment effects diorthosis therapy and sports activities. Methods A total of 82 normal university students with barefoot and normal gait was analyzed by the Footsean USB2 system（ RScan, Belgium） by the ＂first step approach＂. Results The max force existed in the area of heel medial, the second metatarsal and the third metatarsal. The minimal force existed in the area of the toe 2 - 5 and the fifth metatarsal. There was the same regulation between male and female. The distribution of tie to max force ： heel 〈 mid foot 〈 metatarsals 〈 toes. The load rate of heel was the highest during walking and the load rate of left foot was higher than right foot in male and female. The max impulse existed in the second metatarsal and the third metatarsal and heel medial. The minimum impulse existed in toes 2 - 5 and mid foot and the fifth metatarsal. Conclusion There are nearly the same results between university students and normal person and in non-diabetic population studied by other researchers in the foot plantar pressure and its distribution. There were different extent difference between left foot and right foot during walking in maximum force and contact area and impulse of the normal university students, but the same foot plantar pressure distribution regulation between the double feet.