Sports Sciences, Exercise and Health, University of Trás-os-Montes e Alto Douro, Vila Real, Portugal.
Int J Sports Med. 2012 May;33(5):395-401. doi: 10.1055/s-0031-1301320. Epub 2012 Feb 29.
The present study explored how football players' dynamic positional data can be used to assess tactical behaviour by measuring movement patterns and inter-player coordination. A pre post-test design was used to assess the effects of a 13-week constructivist and cognitivist training program by measuring behaviour in a 5 × 5 football small-sided game, played on a 60 × 40 m outdoor natural turf pitch. Data was captured at 5 Hz by GPS devices (SPI Pro, GPSports, Canberra, Australia) and analysed with non-linear signal processing methods. Approximate entropy values were lower in post-test situations suggesting that these time series became more regular with increasing expertise in football. Relative phase post-test values showed frequent periods with a clear trend to moving in anti-phase, as measured by players' distance to the centre of the team. These advances may open new research topics under the tactical scope and allow narrowing the gap between sports sciences and sports coaching.
本研究探讨了如何通过测量运动模式和球员之间的协调来利用足球运动员的动态位置数据评估战术行为。采用前后测试设计，通过在 60×40 米的户外天然草地球场上进行 5×5 足球小场比赛来评估为期 13 周的建构主义和认知主义训练计划的效果。数据由 GPS 设备（SPI Pro、GPSports、堪培拉、澳大利亚）以 5 Hz 的频率采集，并使用非线性信号处理方法进行分析。近似熵值在后测情况下较低，表明随着足球专业知识的增加，这些时间序列变得更加规则。相对相位后测值显示出频繁的时期，球员距离球队中心的距离明显呈反相运动的趋势。这些进展可能会在战术领域开辟新的研究课题，并缩小体育科学和体育教练之间的差距。
