Intra- and inter-seasonal fitness and training load variations of elite U20 soccer players - Saccà, M.; Bondi, D.; Balducci, F.; Petri, C.; Mazza, G. (Research Quarterly for Exercise and Sport, 2023)
Keywords: soccer; training; load; performance capacity; variability; test; talent; playing position (sport games); junior elite sport; USA; sport games; junior sports