Calandro, A., G. Esposito, and G. Altavilla. “Intermittent Training and Improvement of Anthropometric Parameters and Aerobic Capacity in Youth Football”. Journal of Human Sport and Exercise, vol. 15, no. 3proc, Sept. 2020, pp. S599-S608, https://www.jhse.ua.es/article/view/2020-v15-n3-proc-intermittent-training-improvement-anthropometri.