Lyons C, Felton P J, McCabe C
School of Sport, Ulster University, Belfast, Northern Ireland.
School of Science & Technology, Nottingham Trent University, England.
S Afr J Sports Med. 2023 Jun 5;35(1):v35i1a15080. doi: 10.17159/2078-516X/2023/v35i1a15080. eCollection 2023.
Despite an increase in the professionalism and participation of female cricket, the coaching of female pace bowling is still reliant on male-derived knowledge.
To investigate the association between key male-derived kinematic and anthropometric parameters and ball release speed (BRS) in female pace bowlers.
Eleven female pace bowlers participated in this study. BRS, and four anthropometric and five kinematic parameters were determined. Stepwise linear regression and Pearson Product Moment correlations were used to identify anthropometric and kinematic parameters linked to BRS.
The best predictor of BRS explaining 89% of the observed variance was the bowling shoulder angle at ball release. The best anthropometric predictor of BRS was height explaining 53% of the observed variance. Other parameters correlated with BRS included: run-up speed (r = 0.75, p = 0.013) and arm length (r = 0.61, p = 0.046). When height was controlled for, the front knee angle at front foot contact was also correlated to BRS (r = 0.68, p = 0.044). No relationship was found between trunk flexion and BRS.
Faster BRS were characterised by faster run-up speeds, straighter front knees, and delayed arm circumduction similar to male pace bowlers. The lack of relationship between trunk flexion and BRS may highlight female pace bowlers adopting a bowling technique where BRS is contributed to by trunk rotation as well as trunk flexion. This knowledge is likely to be useful in the talent identification and coaching of female pace bowlers.
尽管女子板球运动的专业性和参与度有所提高，但女子快速投球的教练方法仍依赖于源自男性的知识。
研究女子快速投球手中关键的源自男性的运动学和人体测量学参数与投球速度（BRS）之间的关联。
11名女子快速投球手参与了本研究。测定了投球速度以及4个人体测量学参数和5个运动学参数。采用逐步线性回归和皮尔逊积矩相关性分析来确定与投球速度相关的人体测量学和运动学参数。
能解释89%观测方差的投球速度最佳预测指标是投球瞬间的投球肩角度。投球速度的最佳人体测量学预测指标是身高，可解释53%的观测方差。与投球速度相关的其他参数包括：助跑速度（r = 0.75，p = 0.013）和手臂长度（r = 0.61，p = 0.046）。在控制身高因素后，前脚着地时的前膝角度也与投球速度相关（r = 0.68，p = 0.044）。未发现躯干屈曲与投球速度之间存在关联。
与男性快速投球手类似，投球速度较快的特点是助跑速度更快、前膝更伸直以及手臂外展延迟。躯干屈曲与投球速度之间缺乏关联可能表明女子快速投球手采用的投球技术中，投球速度是由躯干旋转以及躯干屈曲共同作用产生的。这些知识可能有助于女子快速投球手的人才选拔和训练。
