Michael W. Krzyzewski Human Performance Laboratory, Duke University Medical Center, Durham, North Carolina, USA.
J Strength Cond Res. 2013 Sep;27(9):2481-6. doi: 10.1519/JSC.0b013e31827f4da6.
Weight shift during the golf swing has been a topic of discussion among golf professionals; however, it is still unclear how weight shift varies in golfers of different performance levels. The main purpose of this study was to examine the following: (a) the changes in the peak ground reaction forces (GRF) and the timing of these events between high (HHCP) and low handicap (LHCP) golfers and (b) the differences between the leading and trailing legs. Twenty-eight male golfers were recruited and divided based on having an LHCP < 9 or HHCP > 9. Three-dimensional GRF peaks and the timing of the peaks were recorded bilaterally during a golf swing. The golf swing was divided into different phases: (a) address to the top of the backswing, (b) top of the backswing to ball contact, and (c) ball contact to the end of follow through. Repeated measures analyses of variance (α = 0.05) were completed for each study variable: the magnitude and the timing of peak vertical GRF, peak lateral GRF, and peak medial GRF (α = 0.05). The LHCP group had a greater transfer of vertical force from the trailing foot to the leading foot in phase 2 than the HHCP group. The LHCP group also demonstrated earlier timing of peak vertical force throughout the golf swing than the HHCP group. The LHCP and HHCP groups demonstrated different magnitudes of peak lateral force. The LHCP group had an earlier timing of peak lateral GRF in phase 2 and earlier timing of peak medial GRF in phases 1 and 2 than the HHCP group. In general, LHCP golfers demonstrated greater and earlier force generation than HHCP golfers. It may be relevant to consider both the magnitude of the forces and the timing of these events during golf-specific training to improve performance. These data reveal weight shifting differences that can be addressed by teaching professionals to help their students better understand weight transfer during the golf swing to optimize performance.
在高尔夫挥杆过程中，重心转移一直是高尔夫专业人士讨论的话题；然而，不同水平的高尔夫球手的重心转移方式仍不清楚。本研究的主要目的是检验以下内容：（a）高差点（HHCP）和低差点（LHCP）高尔夫球手之间的峰值地面反作用力（GRF）变化和这些事件的时间；（b）主导腿和跟随腿之间的差异。招募了 28 名男性高尔夫球手，并根据 LHCP<9 或 HHCP>9 将其分为两组。在高尔夫挥杆过程中，双侧记录三维 GRF 峰值和峰值时间。高尔夫挥杆分为三个不同阶段：（a）准备至挥杆顶点，（b）挥杆顶点至触球，（c）触球至结束跟随。对每个研究变量（垂直 GRF 峰值的幅度和时间、横向 GRF 峰值和纵向 GRF 峰值）进行重复测量方差分析（α=0.05）。与 HHCP 组相比，LHCP 组在第 2 阶段从跟随脚向主导脚转移的垂直力更大。LHCP 组在整个高尔夫挥杆过程中更早地达到了垂直力峰值。LHCP 组和 HHCP 组的横向力峰值幅度不同。LHCP 组在第 2 阶段更早地达到了横向 GRF 峰值，在第 1 阶段和第 2 阶段更早地达到了纵向 GRF 峰值。总体而言，LHCP 高尔夫球手比 HHCP 高尔夫球手产生更大和更早的力。在高尔夫专项训练中，考虑到这些事件的幅度和时间可能很重要，以提高表现。这些数据揭示了重心转移的差异，这些差异可以通过教学专业人员来解决，以帮助他们的学生更好地理解高尔夫挥杆过程中的重心转移，从而优化表现。
