Mercê C, Cordeiro J, Romão C, Branco M, Catela D. Niveles de Actividad Física en Niños: Impacto de la Pandemia Covid-19 (Levels of Physical Activity in Portuguese Children: the Impact of the Covid-19 Pandemic). Retos [Internet]. 2023 Jan. 2 [cited 2025 Dec. 16];47:174-80. Available from: http://207.180.252.49/index.php/retos/article/view/94936