Gamonales, José Martín, Miguel Ángel Salgado-Santos, and Sergio José Ibáñez. 2021. “Influence of Means of Initiation to Training in The Design of Tasks in Soccer in The School Age (U12)”. MHSalud: Revista En Ciencias Del Movimiento Humano Y Salud 18 (2): 1-15. https://doi.org/10.15359/mhs.18-2.10.