1.
Perlaza Estupiñán AA, Burgos Angulo DJ, Menoscal Burgos JF, Vivero Quintero CE, Figueroa Silva MF, Coello Castro MA. Integrated training methodology vs. traditional approach for physical performance development in soccer players aged 12-14. Retos [Internet]. 2025 July 16 [cited 2026 Nov. 7];70:907-20. Available from: https://www.revistaretos.org/index.php/retos/article/view/113899