Psychosocial profile of Mexican youth soccer players: attention, motivation, and volitional traits in non-professional contexts. RIAF. International Journal of Physical Activity, [S. l.], v. 4, n. 1, p. 102–109, 2026. DOI: 10.53591/2776. Disponível em: https://revistas.ug.edu.ec/index.php/riaf/article/view/2776. Acesso em: 10 apr. 2026.