Physiological and locomotor demands during small-sided games are related to match demands and physical fitness? A study conducted on youth soccer players - Clemente, F. M.; Silva, A. F.; Kawczynski, A.; Yildiz, M.; Chen, Y.-S.; Birlik, S.; Nobari, H.; Akyildiz, Z. (BMC Sports Science, Medicine and Rehabilitation, 2022)