GPS measures time motion parameters represented by the distance covered and the number of efforts at different running velocities (e.g., up to 25.2 km/h), as well as bouts of acceleration and deceleration throughout an activity (e.g., up to 3 m/s 2 or −3 m/s 2, respectively) at different intensities ( Akenhead and Nassis, 2016) over a few meters which are too short to reach high speed running ( Varley et al., 2017). For external measures, GPS data have proven to be a valid and reliable means ( Nikolaidis et al., 2018). For internal measures, heart rate or rating of perceived exertion have traditionally been applied ( Owen et al., 2015). TL can be assessed by means of internal and external measures ( Impellizzeri et al., 2019). Both internal and external TLs represent the cumulative exposure of each player to training and competitions ( Jaspers et al., 2018). While external TL refers to the overall activities of a player, internal TL encompasses the psycho-physiological stress imposed on the player's body ( Jaspers et al., 2017). In soccer, the training load (TL) has previously been defined as the input variable that is manipulated to elicit the desired training response ( Impellizzeri et al., 2019) and it can be differentiated into external and internal loads ( Jaspers et al., 2017). In team sports, Global Positioning Systems (GPS) technology is probably the most used monitoring tool to record workloads during training and competitions ( Akenhead and Nassis, 2016). Modern physical training in elite sport is characterized by the systematic and continuous assessment of data on competitive and training performances ( Clemente et al., 2019a).
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