Taliep M Sharhidd, Galal Ushma, Vaughan Christopher L
MRC/UCT Research Unit for Exercise Science and Sports Medicine, Sports Science Institute of South Africa, Newlands, Cape Town, South Africa.
Sports Biomech. 2007 Sep;6(3):345-60. doi: 10.1080/14763140701491310.
The aim of this study was to compare selected kinematic variables of the front foot off-drive in skilled and less-skilled cricket batsmen. High-speed digital cameras were used to record the three-dimensional kinematics of 10 skilled and 10 less-skilled right-handed batsmen when playing a shadow front foot off-drive to realistic projected video footage. Skilled batsmen were more likely to identify the type of delivery bowled. Seventy percent of skilled batsmen had preparatory feet or foot movement before committing to play forward, while only 20% of the less-skilled batsmen utilized this trigger movement. Throughout the drive, the head of the skilled batsmen was further forward of the centre base point than that of the less-skilled batsmen. This forward head position was associated with the tendency for the skilled batsmen's centre of mass to be further forward during the predicted bat-ball contact. There were no significant differences between groups in the shoulder angle, bat angle or bat speed during the different phases of the stroke. There was a tendency for the less-skilled batsmen to have a larger hip angle at contact. This study provides further understanding of the factors associated with skilled performance in cricket batting, which coaches should consider when training less-skilled performers.
本研究的目的是比较技术娴熟和技术欠佳的板球击球手在前脚发力击球时的选定运动学变量。使用高速数码相机记录了10名技术娴熟和10名技术欠佳的右撇子击球手在对着逼真的投影视频画面进行模拟前脚发力击球时的三维运动学数据。技术娴熟的击球手更有可能识别投球的类型。70%的技术娴熟的击球手在决定向前击球之前有准备性的脚步或脚部动作,而只有20%的技术欠佳的击球手运用了这种触发动作。在整个击球过程中,技术娴熟的击球手的头部比技术欠佳的击球手的头部更靠前于中心基点。这种头部向前的位置与技术娴熟的击球手在预计的击球瞬间质心更靠前的趋势相关。在击球的不同阶段,两组在肩部角度、球棒角度或球棒速度方面没有显著差异。技术欠佳的击球手在击球瞬间有髋部角度更大的趋势。本研究进一步揭示了与板球击球技术娴熟表现相关的因素,教练在训练技术欠佳的击球手时应予以考虑。