Publication: Comparing accuracy between global positioningsy stems and ultra-wideband-based position
tracking systems used for tactical analyses in soccer
Authors
Bastida-Castillo, Alejandro ; Gómez-Carmona, Carlos D. ; Cruz Sánchez, Ernesto de la ; Pino Ortega, José
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Publisher
Willey
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DOI
https://doi.org/10.1080/17461391.2019.1584248
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info:eu-repo/semantics/article
Description
© 2019 European College of Sport Science
This document is the accepted version of a published work that appeared in final form in European Journal of Sport Science.
This document is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0
To access the final edited and published work see:
https://doi.org/10.1080/17461391.2019.1584248
Abstract
Current studies have reported high accuracy in global positioning system (GPS) and recently developed ultra-wideband (UWB)-based tracking systems for monitoring time – motion patterns. The accuracy and reliability of both systems may be different in tactical analysis application, an aspect that has never been studied previously. The aims of the present study were: (i) to determine and compare the accuracy of GPS and UWB technologies in soccer players’ positions (ii) to compare the tactical application of both systems. Following institutional ethical approval and familiarisation, 14 welltrained soccer players performed tests around five courses: (a) field perimeter, (b) halfway line, (c) centre circle, (d) perimeter of the penalty area, and (e) semicircle penalty area. Also, a small-sided game was played monitored with WIMUPRO™ to determine real and practical differences in accuracy of both systems in tactical analysis. For the GPS, the mean absolute error (N= 9445) of “x” and “y” coordinates was 41.23 ± 17.31 cm and 47.6 ± 8.97 cm, respectively. For UWB, it was 9.57 ± 2.66 cm and 7.15 ± 2.62 cm. The results of the “x” and “y” accuracy comparison were significantly lower in all cases (p < 0.05) with an ES of 0.78 and 0.95, respectively. In a real practical application, the differences of both systems reached 8.31% in typical tactical variables (ES = 0.11). In contrast to GPS-10Hz, UWB WIMUPRO™-20 Hz has been demonstrated to be an acceptable technology to estimate the position of players on the pitch with high accuracy and be a useful, automatic, and portable instrument for tactical analysis measurement.
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Citation
European Journal of Sport ScienceVolume 19, Issue 9 p. 1157-1165
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