Flores Allende G, Ruiz-Juan F. Motivaciones de los estudiantes universitarios para nunca realizar actividades físico-deportivas de tiempo libre. El caso de la Universidad de Guadalajara (Reasons why the university students do not do any physical activity during their free time. In spec. Retos [Internet]. 2010 Jan. 1 [cited 2025 Sep. 23];17:34-7. Available from: http://207.180.252.49/index.php/retos/article/view/34665