Department of Education , Health Research Centre, University of Almería, Almería, Spain.
Department of Education, Laboratory of Kinesiology, Biomechanics and Ergonomics (Kibiomer Lab.), Research Central Services, University of Almería, Almería, Spain.
Sci Med Footb. 2022 Aug;6(3):398-403. doi: 10.1080/24733938.2021.1984557. Epub 2021 Nov 11.
The world's football-governing body, FIFA, developed the FIFA Quality Programme to set internationally recognized industry standards for electronic performance and tracking systems (EPTS). The positioning and velocity data from different EPTS, discretized into velocity bands, were validated against criteria measures. Discussions have been ongoing between practitioners regarding the FIFA quality performance reports, particularly when the findings are used to compare accuracy between systems. However, there are important methodological issues that should be addressed when interpreting these findings. The aim of this article is to provide practitioners with guidance on interpreting the results of FIFA's EPTS quality performance reports. We demonstrate that several methodological factors should be considered. For example, EPTS reports evaluate individual systems against criteria measures but systems are often not evaluated concurrently (e.g., on the same day using the same participants). Furthermore, technical considerations such as the total number of cameras used for optical (OPT) systems, the total number of antennas used by local positioning systems (LPS), the total number of satellites available for global navigation satellite systems (GNSS) and the velocity bands should be considered before interpreting the post-test results reported for each EPTS. Specifically, comparisons between GNSS, LPS and/or OPT systems are inadvisable unless they are used within the same observation.
世界足球管理机构国际足球联合会（FIFA）制定了 FIFA 质量计划，为电子绩效和跟踪系统（EPTS）设定了国际公认的行业标准。来自不同 EPTS 的位置和速度数据被离散为速度带，并根据标准措施进行验证。关于 FIFA 质量绩效报告，从业者之间一直在进行讨论，特别是当这些发现用于比较系统之间的准确性时。然而，在解释这些发现时，应该解决一些重要的方法学问题。本文的目的是为从业者提供解释 FIFA EPTS 质量性能报告结果的指导。我们表明，应该考虑几个方法学因素。例如，EPTS 报告根据标准措施评估各个系统，但系统通常不会同时进行评估（例如，在同一天使用相同的参与者）。此外，在解释每个 EPTS 报告的测试后结果之前，应该考虑一些技术因素，如光学（OPT）系统使用的摄像机总数、局域定位系统（LPS）使用的天线总数、全球导航卫星系统（GNSS）可用的卫星总数以及速度带。具体来说，除非在同一观察期内使用，否则不建议对 GNSS、LPS 和/或 OPT 系统进行比较。
