Fiabilidad intra-participante de diferentes modelos de dispositivos GPS implementados en un partido de Fútbol 7. (Intra-participant reliability of different models of GPS devices implemented in a 7-a-side soccer match).
DOI:
https://doi.org/10.12800/ccd.v5i14.97Abstract
http://dx.doi.org/10.12800/ccd.v5i14.97
El objetivo de este estudio fue estimar la fiabilidad intra-participante de tres modelos de GPS (Global Positioning System) MinimaxX (Catapult Innovations, Australia), SPI10 y WiSpi (GPSports, Australia) que operan a una frecuencia de 5,1 y 1 Hz, respectivamente. Se midieron distancias recorridas a distintas intensidades a 5 jugadores de fútbol (edad, 20,1 ± 1,2 años; altura, 176,3 ± 9,9 cm; peso, 63,5 ± 8,4 kg) en un partido de entrenamiento de 33 min, en un campo de fútbol-7 (6 jugadores de campo y 1 portero). La distancia total recorrida (DT) media fue de 3.288,8 m para los modelos MinimaxX, 3.050,3 m para el WiSPI y de 3.247,5 m para el SPI10. La velocidad máxima obtenida por cada modelo fue de 30.3 km·h-1 en los dispositivos MinimaxX, y de 25,1 y de 25.2 km·h-1 en los dispositivos WiSPI y SPI10, respectivamente. Se estimó el coeficiente de variación (CV) entre los 3 modelos estudiados para la distancia recorrida en cada uno de los 4 niveles de velocidad, así como para la distancia total recorrida, y la velocidad media y máxima, siendo el tamaño de la muestra la principal limitación.En base a los resultados podemos concluir que los diferentes dispositivos presentan una alta fiabilidad para medir la distancia total recorrida y las recorridas en categorías de baja velocidad. Sin embargo la velocidad de los desplazamientos realizados durante el partido condiciona la fiabilidad de los diferentes dispositivos, aumentando la dispersión de las medidas obtenidas (CV) a medida que se incrementa la velocidad de carrera; especialmente cuando se supera la velocidad de 13 km·h-1.
Palabras clave: tecnología GPS, análisis del movimiento, fiabilidad, fútbol.
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Abstract
The aim of this study was to assess the intra-participant reliability of three models of GPS (global positioning system) devices: MinimaxX (Catapult Innovations, Australia), SPI10 and WiSPI (GPSports, Australia) operating at a sampling rate of 5, 1 and 1 Hz, respectively. Distances traveled were measured at different intensities for 5 soccer players (age: 20.1 ± 1.2 years; height: 176.3 ± 9.9 cm, weight: 63.5 ± 8.4 kg) in a training match lasting 33 min, played on a 7-a-side soccer field. The teams were composed of 6 field players and a goalkeeper. The average total distance traveled (DT) was 3288.8 m according to the MinimaxX models, 3050.5 m according to the WiSPI and 3247.5 m according to the SPI10. The maximum speed obtained by each model was 30.3 km·h-1 for the MinimaxX devices, and 25.1 and 25.2 km·h-1 for the WiSPI and SPI10 devices, respectively. The coefficient of variation (CV) was estimated between the three models of devices that were studied for the distance traveled in each of the 4 levels of speed as well as for the total distance, and the average and maximum speed. The sample size was the main limitation of the study. Based on our results we conclude that the different devices have a high reliability for measuring the total distance and the distances covered in low-speed categories. However, it is observed that the speed of travel during the game affects the reliability of the different devices, increasing the dispersion of the obtained measurements (CV) as the running speed increases, especially when it exceeds the speed of 13 km·h-1.
Key words: GPS technology, time-motion analysis, reliability, soccer.
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