Department of Physical Education, Yonsei University, #321 Sports Science Complex, 50 Yonsei Ro, Seodaemun-gu, Seoul, 03722, Korea.
Frontier Research Institute of Convergence Sports Science, Yonsei University, Seoul, Korea.
Sci Rep. 2021 Jan 29;11(1):2694. doi: 10.1038/s41598-020-79091-7.
The purpose of this study was to investigate how the ball position along the mediolateral (M-L) direction of a golfer causes a chain effect in the ground reaction force, body segment and joint angles, and whole-body centre of mass during the golf swing. Twenty professional golfers were asked to complete five straight shots for each 5 different ball positions along M-L: 4.27 cm (ball diameter), 2.14 cm (ball radius), 0 cm (reference position at preferred ball position), - 2.14 cm, and - 4.27 cm, while their ground reaction force and body segment motions were captured. The dependant variables were calculated at 14 swing events from address to impact, and the differences between the ball positions were evaluated using Statistical Parametric Mapping. The left-sided ball positions at address showed a greater weight distribution on the left foot with a more open shoulder angle compared to the reference ball position, whereas the trend was reversed for the right-sided ball positions. These trends disappeared during the backswing and reappeared during the downswing. The whole-body centre of mass was also located towards the target for the left-sided ball positions throughout the golf swing compared to the reference ball position, whereas the trend was reversed for the right-sided ball positions. We have concluded that initial ball position at address can cause a series of chain effects throughout the golf swing.
本研究旨在探讨高尔夫球手在侧向（M-L）方向上的球位如何在高尔夫挥杆过程中引起地面反作用力、身体各部位和关节角度以及整个身体质心的连锁反应。本研究要求 20 名职业高尔夫球手在 M-L 方向上的 5 个不同球位（4.27cm 球径、2.14cm 球半径、0cm 参考位置、-2.14cm 和-4.27cm）下完成 5 次直球，同时记录他们的地面反作用力和身体各部位的运动情况。在从站位到击球的 14 个挥杆事件中计算了因变量，并使用统计参数映射评估了球位之间的差异。站位时的左侧球位显示出左足更大的重量分布和更开放的肩部角度，与参考球位相比，而右侧球位则相反。这种趋势在挥杆过程中消失了，然后在挥杆过程中再次出现。与参考球位相比，整个身体质心在整个高尔夫挥杆过程中也偏向目标位置，而右侧球位则相反。我们得出结论，初始站位时的球位可以在整个高尔夫挥杆过程中引起一系列连锁反应。
