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