Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom.
Int J Sports Med. 2010 Apr;31(4):237-42. doi: 10.1055/s-0030-1247546. Epub 2010 Feb 15.
The aim of the present investigation was to determine the between-match variability of high-speed running activities completed by a large sample of elite players over an extended period of time. A further aim of the study was to determine the influence of playing position on the magnitude of this variability. Observations on individual match performance measures were undertaken on 485 outfield players (median of 10 games per player; range=2-57) competing in the English Premier League from 2003/2004 to 2005/2006 using a computerised tracking system (Prozone, Leeds, England). High-speed activities selected for analysis included total high-speed running distance (THSR), high-speed running (HSR), total sprint distance (TSD) and the total number of sprints undertaken. Total high-speed running distance in possession and without possession of the ball was also analysed. Match-to-match variability was generally high across all variables with a mean CV of 16.2+/-6.4% (95% CI=15.6-16.7%) and 30.8+/-11.2% (95% CI=29.9-31.7%) reported for HSR and TSD covered during a game. This variability was generally higher for central players (midfielders and defenders) and lower for wide midfielders and attackers. Greater variability was also noted when the team were in possession of the ball (approximately 30%) than when they did not have possession (approximately 23%). The findings of the present study indicate that match-to-match variability in performance characteristics of elite soccer players is high. This inherent variability means that research requires large sample sizes in order to detect real systematic changes in performance characteristics.
本研究旨在确定大量精英球员在较长时间内完成的高速跑动活动的比赛间变异性。本研究的另一个目的是确定比赛位置对这种变异性大小的影响。通过使用计算机跟踪系统（Prozone，Leeds，England）对 2003/2004 赛季至 2005/2006 赛季参加英格兰超级联赛的 485 名外场球员（每名球员的中位数为 10 场比赛；范围为 2-57 场）的个人比赛表现指标进行了观察。选择用于分析的高速活动包括总高速跑动距离（THSR）、高速跑动（HSR）、总冲刺距离（TSD）和冲刺次数。持球和无球时的总高速跑动距离也进行了分析。所有变量的比赛间变异性通常都很高，HSR 和 TSD 覆盖的平均 CV 为 16.2+/-6.4%（95%CI=15.6-16.7%）和 30.8+/-11.2%（95%CI=29.9-31.7%）。中场球员（中场和后卫）的变异性通常更高，而边路中场和前锋的变异性较低。当球队控球时（约 30%），变异性也更高，而当他们没有控球时（约 23%），变异性较低。本研究的结果表明，精英足球运动员的比赛表现特征的比赛间变异性很高。这种固有变异性意味着研究需要大样本量，以便检测到性能特征的真正系统变化。
