Gonzalez, F. ., N. . Hun, S. Aiste, C. . Aguilera, M. Cardenas, and M. Salazar. “Level of Physical Activity in Chilean Preschool and School Children During the Covid-19 Pandemic”. Retos, vol. 54, May 2024, pp. 320-7, doi:10.47197/retos.v54.102268.