During last years the use of new technologies, become crucial to define physical performance, tactics, and technique in football. The physical performance during matches is detected, using video-analysis or GPS system. The aim of this study was to compare external load performance from matches between young professional players (U-21) and professional players from European leagues. Data from U-21 was collected using K-Sport 10 Hz GPS (K-Sport Universal, Italy) using as a sample of three Italian youth teams. Data from professional players are taken from video-analysis gathered from the literature. Were analysed 10 games for each youth teams from Italian Primavera Championship 2016/2017. For every game was used one 10 Hz GPS (K-Sport Universal, Italy) for each player, except goalkeeper and were recorded only data from players that perform all the game.
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