Biomechanical Analysis of Knee Joint Movement in Tai Chi Quan Practiced by Individuals at Different Skill Levels——A Study of"Wild Horse Parts Its Mane"Movement in Chen-Style Tai Chi Quan
OBJECTIVE:This study aims to investigate the biomechanical differences in knee joint movement during the practice of Tai Chi Quan techniques among practitioners of different skill levels,enhance practitioners'exercise experience and provide effective fitness guidance for Tai Chi Quan,thereby improving its fitness effects.METHODS:The study employs literature research method,experimentation,and mathematical statistics.The Vicon three-dimensional motion capture system is used to analyze the biomechanical parameters of knee joint movement during the"Wild Horse Parts Its Mane"movement of Chen-style Tai Chi Quan for six university students and two world champion Tai Chi Quan practitioners.RESULTS:(1)In the sagittal,coronal,and horizontal planes,the champion group exhibited larger flexion angles during the stepping support and forward support phases compared to the student group.During the support phase,the champion group exerted greater flexion and abduction moments.The champion group demonstrated greater extension angles in the lower limb joint in the sagittal and coronal planes,and greater external rotation angles in the horizontal plane compared to the student group.CONCLUSIONS:(1)To better maintain body balance and adhere to the principle of"concealing the chest and pulling up the back,"the champion group positioned their center of mass lower and further forward to avoid the backward tilt of the upper limbs and torso.(2)The champion group exhibited greater extension angles,to some extent,avoiding the occurrence of"kneeling"caused by knee adduction,reducing the risk of knee joint instability and associated injuries.(3)The champion group showed greater extension moments,thereby preventing an increase in the medial compartment load due to sustained knee adduction,consequently reducing the risk of knee joint injuries.
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