Analysing soccer using perturbation attempts
Analysing soccer using perturbation attempts
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DOI：
10.4100/jhse.2012.72.07
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发表时间：
2012-01-01
影响因子：
0.6
通讯作者：
Vuokovic, Goran
中科院分区：
文献类型：
--
作者：
James, Nic;Rees, Gethin D.;Vuokovic, Goran
动态系统理论描述了行为如何在返回到原始稳定状态之前通过一系列状态（稳定或不稳定）偏离。有人认为，壁球表现出类似于动力系统的特性，并证明壁球专家能够可靠地区分弱或强的投篮，使一名球员比他们的对手有明显的优势。他们认为，专家们基本上是在确定“扰动”，他们将其定义为将系统状态从稳定状态改变为不稳定状态或反之亦然的事件。同样，在本文中，我们研究足球控球，并考虑那些球队都没有一个明显的优势，作为一个稳定的情况和扰动的尝试，努力获得一个明显的优势。本研究评估了干扰尝试的相对频率和成功率与比赛状态（事件发生时的比赛得分）的关系。设计了一个手记系统来记录感兴趣的变量（参与的球员、球场位置、表现的行为和行为结果）。八个国内联赛从2007/2008赛季涉及可口可乐联赛一队进行了分析。结果表明，主队的干扰尝试（11.78%的总财产）相比，客队（17.54%）显着减少，但一般干扰尝试更可能是不成功的比成功的（Z = 2.37，p < 0.05）。未来的研究需要评估干扰尝试的频率和干扰成功率是否与演奏水平有关。
Dynamical systems theory describes how behaviours can deviate through a series of states (stable or unstable) before returning to an original stable state. It has been suggested that squash performance exhibits properties akin to a dynamical system and demonstrated that squash experts were able to reliably discriminate weak or strong shots that gave one player a distinct advantage over their opponent. They argued that experts were essentially identifying "perturbations" which they defined as incidents that change a system state from a stable to an unstable situation or vice versa. Similarly, in this paper we examine ball possession in soccer and consider those where neither team has a distinct advantage as being a stable situation and perturbation attempts as those where an effort is made to gain a distinct advantage. This study assessed the relative frequency and success rate of perturbation attempts in relation to the match status (match score at the time of the incident). A hand notation system was designed to record the variables of interest (players involved, pitch locations, behaviours performed and behaviour outcomes). Eight domestic league matches from the 2007/2008 season involving a Coca-Cola League One team were analysed. Results indicated that the home team made significantly less perturbation attempts (11.78% of total possessions) compared to the away teams (17.54%) but that generally perturbation attempts were more likely to be unsuccessful than successful (Z = 2.37, p < 0.05). Future studies need to assess if the frequency of perturbation attempts and perturbation success rates are related to playing standard.