Calandro, Antonio, Giovanni Esposito, and Gaetano Altavilla. 2020. “Intermittent Training and Improvement of Anthropometric Parameters and Aerobic Capacity in Youth Football”. Journal of Human Sport and Exercise 15 (3proc):S599-S608. https://www.jhse.ua.es/article/view/2020-v15-n3-proc-intermittent-training-improvement-anthropometri.