Martins, João, et al. “Correlates of Physical Activity in Young People: A Narrative Review of Reviews. Implications for Physical Education Based on a Socio-Ecological Approach (Correlatos De Actividad física En jóvenes: Una revisión Narrativa De Revisiones. Implicaciones Para”. Retos, vol. 31, Jan. 2017, pp. 292-9, https://doi.org/10.47197/retos.v0i31.53505.