Márquez -Barquero, Magally, Christian Azofeifa-Mora, and Diego Rodríguez- Méndez. 2019. “Comparison of the Attitudes of Adolescents According to Sex and School Level towards Physical Education ”. Innovaciones Educativas 21 (30):13-24. https://doi.org/10.22458/ie.v21i30.2479.