The Analysis of the Position of the Rotation Center during Golf Swing and Its Hitting Accuracy

• Main Authors: Pei-Feng Yang, 楊沛峰
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/wpd897

碩士 === 國立體育學院 === 教練研究所 === 90 === The purpose of this study was to first verify the position of the rotation center during golf swing to be the central area of cervical curvature C-7 and then examine the correlation between the rotation center and the accuracy of hitting the golf ball. In this study, the position of the rotation center was defined as the “top spot” because it happens to be the apex of the rotation axis, and it was assumed to be the steady point during golf swing. Under this assumption, there are two main factors that control the accuracy of hitting the ball right on the sweet spot of the club face. One is the stability of shoulder and trunk rotation indicated by the displacement of the top spot, and the other is the correct height of the top spot when the club hits the ball. Four golf athletes and four beginners participated in the study and each of them performed forty golf swings. All the swings were recorded by digital cameras（1/120 sec） to catch the image of each golfer’s body movements from views above the golfer’s head as well as behind the back. Then the computer software Ariel Dynamics system was used to digitize the images in order to observe the stability of the rotation center, i.e., the least displacement of the top spot in the horizontal direction, and the height difference of the top spot, i.e., the least displacement in the vertical direction. In addition, three coordinates, with horizontal axes X1, X2, X3, and vertical axes Y1, Y2, and Y3, were established to mark the sweet spot and to locate each ball’s exact impact position on the club face. The statistical software SPSS for Windows was used to calculate and compare the rotation stability and height difference of the top spot between hits inside and outside the sweet spot. Results of the Pearson’s correlation analysis showed a statistically significant (p<.05) relationship between the stability of the rotation center and hitting accuracy as well as between the height difference of the top spot and hitting accuracy.