高度特征衡量下肢关节运动稳定性研究

Study of Lower Limb Joint Motion Stability Using Height Features

本文研究同一人行走过程中下肢关节高度变化特征的稳定性。受试者自然行走30次,使用Codamotion采集受试者行走过程中关节高度,采取Spearman系数相关性检验,统计分析同一人自然行走下肢高度变化规律(为避免样本量加倍仅分析右侧)。研究结果为:在0.01级别(双尾),98.9%下肢关节高度Spearman相关系数呈高相关;1.1%呈显著相关,86.6%下肢关节速度Spearman相关系数呈高相关;13.4%呈显著相关,除膝关节蹬离阶段外四部位各行走阶段均值高度呈正态分布。得出同一人行走时,测试部位高度及速度变化特征具稳定性,不同行走阶段关节高度稳定性也有差异的结论。

This paper studies the stability of the height change characteristics of lower limb joints during walking in the same person.The subjects walked naturally 30 times,and Codamotion is used to collect the joint height of the subjects during walking,and the Spearman's coefficient correlation test is used to statistically analyze the variation of the lower limb height of the same person who walked naturally(only the right side is analyzed to avoid doubling the sample size).The results show:at the 0.01 level(double tail),98.9%of the Spearman's correlation coefficients of lower limb joint height are highly correlated;1.1%are significantly correlated,86.6%of the lower limb joint speed Spearman's correlation coefficients are highly correlated;13.4%are significantly correlated,and the mean height of each walking stage in the four parts except the knee pedaling stage is normally distributed.The conclusion can be drawn that the height and speed changes of the test site are stable when the same person walks,and the height stability of the joint at different walking stages is also different.