Ibrahim Rony, de Boode Vosse, Kingma Idsart, van Dieën Jaap H
Department of Physical Education, College of Education, Qatar University, Doha, Qatar.
Adidas miCoach Performance Centre, AFC Ajax, Amsterdam, The Netherlands.
Sports Biomech. 2022 Jul 27:1-13. doi: 10.1080/14763141.2022.2099966.
The goal of this study was to evaluate the technical and physical adaptations to a data-driven 12-weeks training programs that incorporated recent findings from biomechanical studies on the diving save. Three-dimensional kinematics and kinetics were collected and analysed from 11 goalkeepers diving to save high (190 cm) and low (30 cm) balls at three occasions: twice pre-training and once post-training. Intraclass correlation coefficients were found to be excellent (>.7) between the pre-training tests, and there were no learning effects between them. Three-way repeated measures ANOVAs were used to evaluate the effect of dive side, dive height and training programme (pre- vs post-training) on normalised dive time [s·m], average centre of mass (CoM) horizontal velocity [m·s] and total power [W] generated at contralateral and ipsilateral push-offs. Compared to pre-training, the post-training results revealed greater average CoM horizontal velocity (+.82 m·s, 95% CI = [.62, 1.02]) and power (+523 W, 95% CI = [313, 732]) at contralateral push-off. These adaptations caused a reduction in normalised dive time (- .008 s·m, 95% CI = [- .014, - .002]) at post-training compared to pre-training. This translates to 42 cm more goal area coverage in a penalty situation.
本研究的目的是评估对一项为期12周的数据驱动训练计划的技术和身体适应性,该计划纳入了最近关于扑救动作生物力学研究的结果。在三个时间点收集并分析了11名守门员扑救高球(190厘米)和低球(30厘米)时的三维运动学和动力学数据:训练前两次,训练后一次。训练前测试之间的组内相关系数非常好(>.7),且它们之间没有学习效应。使用三因素重复测量方差分析来评估扑救侧、扑救高度和训练计划(训练前与训练后)对标准化扑救时间[s·m]、平均质心(CoM)水平速度[m·s]以及在对侧和同侧蹬地时产生的总功率[W]的影响。与训练前相比,训练后的结果显示对侧蹬地时平均CoM水平速度更高(+.82 m·s,95%置信区间=[.62, 1.02])且功率更大(+523 W,95%置信区间=[313, 732])。与训练前相比,这些适应性变化导致训练后标准化扑救时间减少(-.008 s·m,95%置信区间=[-.014, -.002])。这意味着在点球情况下球门区域的覆盖范围增加了42厘米。