摘要
Background： To understand an effective golf swing, both swing speed and impact precision must be thoroughly and simultaneously examined. The aim of this study was to perform both swing speed test and impact precision test to ascertain what swing type determines an effective impact. Methods： Seven golfers from a college team （handicap： 0--12） were recruited to complete a swing speed test and impact precision test using a 5-iron club, A force plate and electromyography （EMG） system were used to collect data in the swing speed test to compare the difference between two motion sequences. High speed video cameras were used to determine the displacement of rotation center for impact precision test. Results： The results showed a significant difference （p 〈 0.01） in clubhead speed with different motion sequences and muscle contraction patterns. In the impact precision test, the displacement of the rotation center which defined as the inner center point of the C7 was significantly different （p 〈 0.05） between different ball impacted marks on club face. Conclusion： The vertical peak ground reaction force on left foot occurring before impact and the left latissimus dorsi contracting prior to the right pectoralis major represent a superior skill by allowing the club to strike the ball with normal collision at a faster speed.
背景:检验一次高尔夫挥杆动作是否有效,必须同时且完整地获取挥杆速度和击球精准度。本研究旨在通过测试挥杆速度和击球精准度以确定可形成有效击球的挥杆类型。方法:招募7名大学校队高尔夫球手(差点为0-12杆),采用5号球杆完成挥杆速度测试和击球精准度测试。利用测力台和肌电图系统采集挥杆速度测试过程中的数据,并比较两个动作顺序之间的区别。采用高速摄像机获取击球精准度测试过程中躯干旋转中心的位移。结果:不同动作顺序和肌肉收缩模式下,杆头速度有显著差异(p<0.01)。同时,在击球精准度测试中,旋转中心(颈7内中心点)的位移随球面上不同的击球痕迹而显著不同(p<0.01)。结论:优秀的击球技术表现为:1)左脚的最大垂直地面反作用力产生于击球前;2)左侧背阔肌先于右侧胸大肌产生收缩。上述技术动作可使球杆在更快的速度下垂直于球产生碰撞。
