Alanen Aki-Matti, Gibson Eric S, Critchley Meghan, Benson Lauren C, Jordan Matthew J, Ferber Reed, Pasanen Kati
Integrative Neuromuscular Sport Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada.
Sport Injury Prevention Research Center, Faculty of Kinesiology, University of Calgary, Calgary, Canada.
J Hum Kinet. 2023 Sep 5;89:149-160. doi: 10.5114/jhk/169524. eCollection 2023 Oct.
Change of direction (COD) maneuvers in soccer create tactical advantages, but also expose the player to an increased risk of injury. COD ability is commonly tested with pre-planned drills including cuts greater than 90°. These tests do not take into consideration positional differences players encounter during games. This case-series study used principal component analysis (PCA) to examine situational differences during COD movements between playing positions in youth soccer games. For each of the four teams included (26 females, 27 males), one game was analyzed using video-analysis. Two independent reviewers identified situational patterns and a PCA was used to examine differences between playing positions. Three principal components explained 89% of the variation in the data and were categorized as the total quantity of CODs, attacking/goal-scoring and defensive reacting types of CODs. One-way ANOVA on the individual principal component (PC) scores showed significant differences (p < 0.05) between centre midfielders, goalkeepers, and centrebacks in the quantity of CODs (PC1), and between wingers and fullbacks and centre backs in attacking/goal-scoring CODs (PC2), whereas PC3 was not different between playing positions. Differences between playing positions suggest that training and testing protocols in soccer could be enhanced to better match the individual and playing position-based needs.
足球中的变向(COD)动作能创造战术优势,但也会使球员受伤风险增加。COD能力通常通过预先计划好的训练来测试,包括大于90°的切入动作。这些测试没有考虑到球员在比赛中遇到的位置差异。本病例系列研究使用主成分分析(PCA)来检查青少年足球比赛中不同位置球员COD动作的情境差异。对于纳入的四支球队(26名女性、27名男性)中的每一支,使用视频分析对一场比赛进行了分析。两名独立评审员确定了情境模式,并使用PCA来检查不同位置之间的差异。三个主成分解释了数据中89%的变异,并被归类为COD的总量、进攻/进球得分型COD和防守反应型COD。对各个主成分(PC)得分进行的单因素方差分析显示,在COD总量(PC1)方面,中场球员、守门员和中后卫之间存在显著差异(p<0.05),在进攻/进球得分型COD(PC2)方面边锋、边后卫和中后卫之间存在显著差异,而PC3在不同位置之间没有差异。不同位置之间的差异表明,足球中的训练和测试方案可以改进,以更好地满足个体和基于位置的需求。