A comparison of locomotor pointing strategies in Cricket Bowling and Long Jumping
A comparison of locomotor pointing strategies in Cricket Bowling and Long Jumping
复制标题
板球保龄球和跳远运动指向策略的比较
DOI：
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发表时间：
2006
影响因子：
0.8
通讯作者：
K. Davids
中科院分区：
文献类型：
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作者：
I. Renshaw;K. Davids
以前的工作在运动中的助跑运动指向控制已经揭示了视觉调节策略的重要性，虽然大多数现有的研究已经进行了有限范围的任务约束下，主要是在运动跳跃。本文的目的是通过比较跳远和板球保龄球任务约束下的运动指向策略来扩展对控制机制的理解。一个有趣的问题是视觉调节策略的差异是否源于嵌套任务约束的差异和助跑结束时垂直参考信息的可用性。有证据表明，跳远运动员和保龄球运动员使用前瞻性的控制策略，在方法运行，虽然这两项运动的独特的任务限制形状助跑策略。在跳远运动员中，已经表明，当表演者需要时，可以进行步长调整，以确保击中起跳板。在板球运动员中，传统的试验间分析显示，尽管在起始点的变异性很高，由于在助跑的早期和晚期实施了两个视觉调节阶段，保龄球运动员似乎能够减少变化的脚步放置在绑定步骤到同样的非常低的水平跳远。随后的一项逐个试验的分析强调，投球手在整个助跑过程中都会调整步长，只有在需要的时候才进行调整。数据表明，嵌套的任务限制和可用性的垂直参考信息，在运动结束时运行约束步态调节策略的实施。需要进行研究，以指定用于引导运动在板球和跳远助跑知觉变量的性质。
Previous work on locomotor pointing control during run-ups in sports has revealed the importance of visual regulation strategies, although most existing research has been conducted under a limited range of task constraints, mainly in the athletic jumps. The aim of this position paper is to extend understanding of control mechanisms by comparing research on locomotor pointing strategies under task constraints of long jumping and cricket bowling. An interesting question is whether differences in visual regulation strategies arise from differences in nested task constraints and availability of vertical reference information at the end of the run-up. Evidence suggests that long jumpers and bowlers use a prospective control strategy in approach runs, although the unique task constraints of both sports shape run-up strategies. In long jumpers, it has been shown that step adjustments can occur as and when needed by performers to ensure hitting the take-off board. In cricketers, a traditional inter-trial analysis revealed that despite a high level of variability in initiation points, due to the implementation of two visual regulation phases early and late in the run-up, bowlers seem able to reduce variability of footfall placement at the bound step to the same very low levels as long jumpers. A subsequent trial-by-trial analysis highlighted that bowlers spread adjustments of step length over the whole run-up and made adjustments only when needed and for as long as necessary. Data suggest that nested task constraints and the availability of vertical reference information at the end of run-ups in sport constrain implementation of gait regulation strategies. Ongoing research is needed to specify the nature of the perceptual variables used to guide locomotion in the cricket and long jump run-ups.