De Souza-Lima, Josivaldo, Rodrigo Alejandro Yañez Sepulveda, Gerson Ferrari, Frano Giakoni-Ramírez, Jorge Olivares-Arancibia, and Pedro Valdivia-Moral. “Impacto De La Actividad física En El estrés Escolar En niños Y Adolescentes Antes Del COVID-19: Una revisión sistemática (Impact of Physical Activity on School-Related Stress in Children and Adolescents before COVID-19: A Systematic Review)”. Retos 61 (December 1, 2024): 748–757. Accessed December 8, 2025. http://revistaretos.org/index.php/retos/article/view/108748.