以矢量角衡量肘关节运动特征研究

Study on the Measurement of Elbow Joint Motion Characteristics Using Vector Angles

为了以矢量角衡量肘关节运动及其稳定性、探索稳定可靠的步态特征,从而为探索足迹学的科学性提供支撑。本文通过Codamotion三维动作捕捉系统,捕获了受试者在3种速度下分别进行20次的行走,并得出了左右肘关节矢量角角度,由此研究了肘关节的运动状态。利用Spearman相关性分析方法,研究了同一受试者上肢关节在三维空间的运动轨迹的稳定性情况;利用配对样本t检验法,分析了速度对同一受试者肘关节矢量角角度的影响,从而分析了速度变化对人体行走运动特征的影响。经实验分析可知,同一人自然行走多趟时肘关节在不同速度下均具有一定的稳定性;速度的改变对于上肢肘关节的运动有一定的影响。

In order to measure the elbow joint motion and its stability using vector angles,and explore stable and reliable gait characteristics.so as to provide support for the scientificity of footprints.In this paper,the Codamotion 3D motion capture system is used to capture the subjects'walking twenty times at three different speeds,and the vector angle of the left and right elbow joints are obtained to study the motion state of the elbow joint.Spearman correlation analysis is used to study the stability of the upper limb joints'motion trajectory in three-dimensional space for the same subject;paired sample t-test is used to analyze the effect of speed on the vector angle of the elbow joint for the same subject,and thus to analyze the effect of speed variation on human walking motion characteristics.The experimental analysis shows that the elbow joint has a certain degree of stability at different speeds when the same person walks naturally multiple times;the changes of speed have influence on the upper limb elbow joint motion.