Fernández-Hernández, A., Manzano-Sánchez, D., Jiménez-Parra, J.F. and Valero-Valenzuela, A. 2021. Analysis of differences according to gender in the level of physical activity, motivation, psychological needs and responsibility in Primary Education. Journal of Human Sport and Exercise. 16, 2proc (Mar. 2021), S580-S589. DOI:https://doi.org/10.14198/jhse.2021.16.Proc2.42.