从足底压力分布看步法特征的可靠性

The testification of the reliability of gait impression theory through thenar pressure distribution

利用比利时FootScan压力传感器,对154名年龄在18至55岁之间的健康男性赤足正常行走时的足底压力数据进行提取,以运动生理学、运动生物力学及足迹步法特征理论为基础,用数理统计学方法对足迹压力数据进行了计算分析,对步法特征形成不同时期足与承受客体相互间的作用过程和作用方式进行深入、系统、定量的研究,进而对步法特征的传统理论进行验证,阐明了对步法特征理论中未经过科学验证部分的认识,并对步法特征理论中各类特征的可靠性及特征价值进行了初步的探讨,为今后的足迹步法特征检验鉴定工作和步法特征的发展完善都提供了有力的依据。

Using Footscan gait systems made in Belgium, we investigate fully and quantitatively the thenar pressure distribution and the motion of foot while walking in normal speed. After the processing of the pressure data of 154 healthy male walking with bare foot on the sensor plate, we analyze a great deal of resultant data by means of Mathematical Statistics based on the theories of sports physiology, sports biomechanics and the traditional gait impression theory, we carried out some experiments to investigate fully and quantitatively the process of the unrolling of foot and the motion of foot during the formation of gait impression to testify the traditional gait impression theory. Finally we set forth a modified gait impression theory, discuss the reliability and the value of the gait impression, and provide some reference for the identification method of gait impression and for the further development of gait impression theory.