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Reliability of the GPS system in measuring key parameters of external load in youth soccer players.
Fojtík, Kamil ; Bujnovský, David (advisor) ; Vampola, Jindřich (referee)
Title: Reliability of the GPS system in measuring key parameters of external load in youth soccer players Objectives: The main objective of this study was to investigate reliability of a GPS system in measuring key parameters of external load in youth soccer players Methods: The research group consisted of 15 youth football players aged 15 - 18. They were U16 and U19 players from elite youth teams playing the highest competitions in their category. Players undergone field trials under the supervision of qualified professionals, which were running under the standard conditions described within the methology section of the theses. To determine the reliability of the GPS system, we used the Catapult Playertek system, where the player wore 3 trackers and performer various speed test field, on the football pitch on artificial grass of the third generation. Results: The results of the work provide information that, in terms of statistical significance, eighteen of the nineteen parameters are significant. In terms of substantive significance, 3 parameters have poor reliability - maximal acceleration and distances in acceleration zones 1 - 2 m·s−2 and 2 - 3 m·s−2 . 7 parameters have moderate reliability - distances in deceleration zones 1 - 2 m·s−2 , 2 - 3 m·s−2 , 3 - 4 m·s−2 and > 4 m·s−2 , distances in...
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