Comparative Analysis of Three-Dimensional Kinematics of the Driver Swing Technique of Outstanding Golfers——A Case Study on Lin Xiyu and Jin Young Ko's Actions in the 2019 Shanghai Buick LPGA Tournament
OBJECTIVE:This study aims to explore the characteristics and differences in the driver swing technique of Lin Xiyu and Jin Young Ko,providing reference for the improvement of scientific training in golf.METHODS:Research methods such as literature review,three-dimensional video analysis,and mathematical statistics were used to analyze the driver swing technique of Lin Xiyu and Jin Young Ko in the tournament.RESULTS:(1)Lin Xiyu's driving distance was significantly shorter than Jin Young Ko's(P＜0.05).The average swing speed and ball efficiency of Lin Xiyu and Jin Young Ko were(94.27±8.07)mph,(1.46±0.05)mph,(96.41±3.86)mph,and(1.51±0.05)mph,respectively.(2)The shoulder joint rotation angle at the top of the swing was significantly positively correlated with swing speed for both players(P＜0.05),and the hip joint rotation angle at the moment of impact was significantly positively correlated with launch angle for both players(P＜0.05).(3)During the setup,Lin Xiyu's left knee joint angle was significantly smaller than Jin Young Ko's(P＜0.05).(4)The vertical movement of the center of gravity along the Z-axis from the top of the swing to the 9 o'clock position of the downswing was significantly smaller for Lin Xiyu compared to Jin Young Ko(P＜0.05).CONCLUSION:(1)Compared to Jin Young Ko,Lin Xiyu had a shorter driving distance,possibly due to differences in swing speed and ball efficiency.(2)The magnitude of shoulder joint rotation angles at the top of the swing plays a crucial role in swing speed,and there was little difference in shoulder joint rotation angles and swing speed between the two players.Lin Xiyu had smaller hip joint rotation angles and launch angles compared to Jin Young Ko.(3)Lin Xiyu had a smaller left knee joint angle during the setup compared to Jin Young Ko.(4)The downward movement of the center of gravity from the top of the swing to the 9 o'clock position was shorter for Lin Xiyu compared to Jin Young Ko.
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