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上肢投掷中速度-准确性权衡方面新手与专家的比较。

A comparison between novices and experts of the velocity-accuracy trade-off in overarm throwing.

作者信息

van den Tillaar Roland, Ettema Gertjan

机构信息

Faculty of Social Sciences and Technology Management, Norwegian University of Science and Technology.

出版信息

Percept Mot Skills. 2006 Oct;103(2):503-14. doi: 10.2466/pms.103.2.503-514.

Abstract

Expert team-handball players do not show the typical trade-off between speed and accuracy in overarm throwing. Van den Tillaar and Ettema (2003a) attributed this result to the uniqueness of the training experience of this group. The purpose of this study was to test their hypothesis by comparing experts with novices on overarm throwing by manipulating the goal of the task using different instructions. No trade-off between speed and accuracy was found for novices (n = 13; M age = 22.7 yr., SD = 2.2) or experts (n = 9; Mage = 24 yr., SD = 2.2): accuracy did not change by instruction. Furthermore, the linear velocities of the ball and endpoints of body segments and their timing were affected by instruction in a similar fashion in both groups. This finding indicates that training experience is not related to speed-accuracy tradeoff in overarm throwing.

摘要

优秀的男子手球运动员在过肩投掷时,速度与准确性之间并未呈现出典型的权衡关系。范登·蒂拉尔和埃特马(2003a)将这一结果归因于该群体独特的训练经历。本研究的目的是通过使用不同指令操纵任务目标,比较专家和新手的过肩投掷情况,以检验他们的假设。新手(n = 13;平均年龄 = 22.7岁,标准差 = 2.2)和专家(n = 9;平均年龄 = 24岁,标准差 = 2.2)在速度与准确性之间均未表现出权衡关系:准确性不会因指令而改变。此外,两组中球和身体各部位端点的线速度及其时间安排受指令影响的方式相似。这一发现表明,训练经历与过肩投掷中的速度-准确性权衡无关。

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