Müller Sean, Brenton John, Dempsey Alasdair R, Harbaugh Allen G, Reid Corinne
School of Psychology and Exercise Science, Murdoch University, 90 South Street, Murdoch, Perth, Australia, 6150,
Atten Percept Psychophys. 2015 Jul;77(5):1726-36. doi: 10.3758/s13414-015-0876-7.
Expertise studies into visual perceptual-motor skills have mainly focused their investigation upon group comparisons rather than individual comparisons. This study investigated the pick-up of visual information to time weight transfer and bat kinematics within an exemplar group of striking sport experts using an in situ temporal occlusion paradigm. Highly skilled cricket batsmen faced bowlers and attempted to strike delivered balls, whilst their vision was either temporally occluded through occlusion glasses prior to ball bounce or not occluded (control condition). A chronometric analysis was conducted on trials in the occlusion condition to quantify the pick-up of visual information to time biomechanical variables. Results indicated that initiation of weight transfer and bat downswing, as well as bat downswing completion, was significantly different between some individual batsmen. No significant difference was found between individual batsmen for time of weight transfer completion. Unexpectedly, it was found that achievement of the goal to strike delivered balls, that is, the frequency of bat-ball contacts was not significantly different between batsmen. Collectively, the findings indicate that individual differences exist in the coordination pattern of a complex whole body visual perceptual-motor skill, but these different patterns are used to achieve a similar outcome, which is known as motor equivalence.
对视觉感知运动技能的专业研究主要集中在群体比较而非个体比较上。本研究使用原位时间遮挡范式，在一组优秀的击球运动专家中，研究了视觉信息获取与时间重量转移及球拍运动学之间的关系。高技能的板球击球手面对投球手并试图击打投出的球，同时他们的视觉在球反弹前通过遮挡眼镜进行时间遮挡或不进行遮挡（对照条件）。对遮挡条件下的试验进行了计时分析，以量化视觉信息获取与时间生物力学变量之间的关系。结果表明，一些个体击球手在重量转移启动、球拍下摆以及球拍下摆完成方面存在显著差异。个体击球手在重量转移完成时间上未发现显著差异。出乎意料的是，发现击球手击打投出球的目标达成情况，即球拍与球接触的频率在击球手之间没有显著差异。总体而言，研究结果表明，在复杂的全身视觉感知运动技能的协调模式中存在个体差异，但这些不同模式用于实现相似的结果，这被称为运动等效性。
