Gómez-Mármol, A., Sánchez-Alcaraz Martínez, B. J. and Bazaco Belmonte, M. J. (2017) “Physical Education as a fun subject in Secondary Education: sedentarism and practice of extracurricular physical-sport activities”, Sportis. Scientific Technical Journal of School Sport, Physical Education and Psychomotricity, 3(3), pp. 605–620. doi: 10.17979/sportis.2017.3.3.1829.