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)

Abstract

ResumenEl 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. AbstractThe 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 du...

Influence of physical fitness on decision-making of soccer referees throughout the match

“…To do this, they must position themself properly to make decisions correctly, since they are final and influence the outcome of a match [ 3 ]. Soccer is a sports modality that has a low score [ 4 ] and, in addition, the continuous decrease in the number of goals scored during matches, due to the improvement of the physical condition of the players [ 5 ], and the tactical attitude that coaches adopted when the score was favorable [ 6 , 7 ], shows that refereeing decisions are more relevant. Likewise, the SRs need to make decisions under stressful conditions, with high physical demands and throughout a 90-min competition [ 8 ].…”

Principal components approach of physiological and physical metrics collected through GPS technology in soccer referees

“…29 Soccer is a sports modality that has a low score, 30 compared to other team sports such as basketball, volleyball, and handball. In addition, the continuous decrease in the number of goals scored during matches, due to the increase of the physical condition of the players, 31 and the tactical attitude that coaches adopt when the score is favorable, 32,33 show that refereeing decisions are even more relevant. Furthermore, the SRs need to make decisions under stressful conditions, with high physical demands throughout a 90-min competition.…”

Scoring first relevance in knockout promotion to Spanish LaLiga Smartbank

“…In a low-scoring sport such as football and a continuous decline of goals scored through the matches due to players´ physical condition improvements (Castillo-Rodríguez et al, 2020) and the tactical approach embraced by coaches when the score is advantageous (Castellano et al, 2010), has revealed that scoring first´s relevance is capital (Anderson & Sally, 2013;Castellano-Paulis et al, 2009). In this way, the first goal scored in a match is an excellent predictor of its final score, teams´ style of play modification and variation in players' psychological state (Castellano-Paulis et al, 2009;Buldu et al, 2019).…”