Virginia-Añez, Elizabeth, Albert Fornieles-Deu, and David Sánchez-Carracedo. 2020. “Longitudinal Study of Physical Activity in Spanish Young Adolescents: Weight Status and Gender Differences”. Revista De Psicología Del Deporte (Journal of Sport Psychology) 29 (1):57–66. https://mail.rpd-online.com/index.php/rpd/article/view/47.