Mayorga Aguilar L, Martínez-Salazar C, Carcamo-Oyarzun J. Perception of Effort and Objective Levels of Intensity in Physical Education Classes of Primary Schoolchildren According to Gender and Nutritional Status: A Pilot Study. MHSalud [Internet]. 2021 Dec. 9 [cited 2024 Dec. 20];19(1):1-11. Available from: https://www.revistas.una.ac.cr/index.php/mhsalud/article/view/14666