Faculty of Sport Sciences, University of Extremadura, Boulevard of the University s/n, 10003 Cáceres, Spain.
LaLiga Sport Research Section, 28043 Madrid, Spain.
Int J Environ Res Public Health. 2022 Apr 22;19(9):5125. doi: 10.3390/ijerph19095125.
The present study aimed to analyze the influence of the Video Assistant Referee (VAR) on match physical demands in the top Spanish professional football league. Match physical demand data from all the matches for two seasons (2017/2018 and 2018/2019) in the First Spanish Division ( = 1454) were recorded using an optical tracking system (ChyronHego). Total distance, relative total distance covered per minute, distance covered between 14-21 km·h, distance covered between 21-24 km·h, and distance covered at more than 24 km·h were analyzed; also, the number of sprints between 21-24 km·h and more than 24 km·h were taken into consideration. The times the VAR intervened in matches were also taken into account. Results showed that total distance and relative total distance significantly decreased in seasons with VAR compared to seasons without VAR. Finally, distance covered between 21-24 km·h, distance covered at more than 24 km·h, and the number of high-intensity efforts between 21-24 km·h and more than 24 km·h increased in seasons with VAR compared to seasons without VAR, but the differences were nonsignificant. Thus, these findings help practitioners to better understand the effects of the VAR system on professional football physical performance and to identify strategies to reproduce competition demands.
本研究旨在分析视频助理裁判（VAR）对西班牙顶级职业足球联赛比赛身体需求的影响。使用光学跟踪系统（ChyronHego）记录了两个赛季（2017/2018 和 2018/2019）西班牙甲级联赛（=1454）所有比赛的比赛身体需求数据。分析了总距离、每分钟相对总距离、14-21km·h 之间的距离、21-24km·h 之间的距离和超过 24km·h 的距离；还考虑了 21-24km·h 和超过 24km·h 之间的冲刺次数。还考虑了 VAR 干预比赛的时间。结果表明，与没有 VAR 的赛季相比，有 VAR 的赛季总距离和相对总距离显著减少。最后，与没有 VAR 的赛季相比，有 VAR 的赛季 21-24km·h 之间的距离、超过 24km·h 的距离以及 21-24km·h 和超过 24km·h 之间的高强度努力次数增加，但差异无统计学意义。因此，这些发现有助于从业人员更好地了解 VAR 系统对职业足球体能表现的影响，并确定复制比赛需求的策略。
