School of Sport Sciences, Universidad Europea de Madrid, 28670 Villaviciosa de Odón (Madrid), Spain.
IGOID Research Group, Department of Physical Activity and Sport Sciences, University of Castilla-La Mancha, 45071 Toledo, Spain.
Int J Environ Res Public Health. 2020 Mar 15;17(6):1912. doi: 10.3390/ijerph17061912.
The aim of this study was to compare the validity of two different GPS device models used for time-motion analyses in ecological testing of football.
Ten healthy male players from a Spanish university football team participated in this study. The team sport simulation circuit (TSCC) used was based on previous research examining the validity and interunit reliability of different GPS systems. Participants were required to complete eight laps of the TSSC, resulting in a total distance of 1320 m. The GPS units used for the current study were the 18 Hz StatsSport Apex Pro and 18 Hz RealTrack WIMU Pro. Participants were required to wear either of the two GPS units during the test. To establish the construct validity of GPS as a measure of V, timing lights were used as a gold standard.
The results clearly suggest that it is not possible to use the same 18 Hz GPS model or interchange it. The measurement can be considered precise when the noise is at least equal to or lower than the smallest worthwhile change. In this case, all standard deviation in measurement error was higher than the smallest worthwhile change. This is due to an inconsistency in the data processing of each trademark.
It is important to prevent a club using different GPS trademarks at the same time, since it is not possible to compare in any case any type of result obtained between different trademarks.
本研究旨在比较两种不同 GPS 设备模型在足球生态测试中的时间-动作分析中的有效性。
来自西班牙大学足球队的 10 名健康男性参与者参加了这项研究。使用的团队运动模拟电路（TSCC）基于先前研究检验了不同 GPS 系统的有效性和单元间可靠性。要求参与者完成 8 圈 TSSC，总距离为 1320 米。当前研究使用的 GPS 单元是 18HzStatsSport Apex Pro 和 18HzRealTrack WIMU Pro。要求参与者在测试期间佩戴两个 GPS 单元中的任何一个。为了建立 GPS 作为 V 测量的结构有效性，使用定时灯作为金标准。
结果清楚地表明，不可能使用相同的 18Hz GPS 模型或互换它。当噪声至少等于或低于最小有意义的变化时，可以认为测量是精确的。在这种情况下，所有测量误差的标准差都高于最小有意义的变化。这是由于每个商标的数据处理不一致造成的。
重要的是要防止俱乐部同时使用不同的 GPS 商标，因为在任何情况下都不可能比较不同商标之间获得的任何类型的结果。
