Anderson Ross, Harrison Andrew, Lyons Gerard M
Biomechanics Research Unit, College of Science, University of Limerick, Limerick, Ireland.
Sports Biomech. 2005 Jul;4(2):179-95. doi: 10.1080/14763140508522862.
The training and competition regimen of elite athletes demands rapid feedback about their performance. The aim of this study was to determine if real-time visual ipsative (comparison with oneself) feedback of instantaneous kinematic consistency improves overall kinematic consistency in rowing. Accelerometry-based data, representing the upper and lower body kinematics, were determined for 13 experienced rowers. Kinematic consistency data -- represented by percentage time outside the acceptable performance bandwidth, performance consistency -- represented by power-stroke dispersion, and several performance indicators were acquired for all the rowers for three 2000 m time trials on a RowPerfect ergometer with three different visual feedback interventions: no feedback, detailed feedback, and summary feedback. Results indicated significantly increased performance consistency for detailed feedback than for both no feedback (p < 0.01) and summary feedback (p < 0.05). No significant difference between summary feedback and no feedback was found (p = 0.173). We deemed feedback of detailed information to enhance kinematic consistency significantly more than both no feedback (p < 0.01) and summary feedback (p < 0.01) interventions, although summary feedback was shown to enhance kinematic consistency more than no feedback (p < 0.01). No improvements were found for performance-related parameters.
精英运动员的训练和比赛方案需要关于他们表现的快速反馈。本研究的目的是确定即时运动学一致性的实时视觉自身比较（与自己比较）反馈是否能提高划船运动中的整体运动学一致性。为13名有经验的划船运动员测定了基于加速度计的数据，这些数据代表了上半身和下半身的运动学。在RowPerfect测力计上进行三次2000米计时赛，通过三种不同的视觉反馈干预措施：无反馈、详细反馈和总结反馈，获取了所有划船运动员的运动学一致性数据（以超出可接受表现带宽的时间百分比表示）、表现一致性（以动力冲程离散度表示）以及几个表现指标。结果表明，详细反馈的表现一致性显著高于无反馈（p < 0.01）和总结反馈（p < 0.05）。总结反馈和无反馈之间未发现显著差异（p = 0.173）。我们认为，详细信息反馈比无反馈（p < 0.01）和总结反馈（p < 0.01）干预措施更能显著提高运动学一致性，尽管总结反馈比无反馈更能提高运动学一致性（p < 0.01）。未发现与表现相关参数有改善。
