CHRUŚCIŃSKA, Agnieszka, SMOLEŃSKA, Olga, MUSZKIETA, Radosław, HAGNER-DERENGOWSKA, Magdalena and MICHALSKA, Anna. Age-Related Differences in Motivations and Barriers to Physical Activity: A Cross- Sectional Analysis Across the Lifespan. Journal of Education, Health and Sport. Online. 23 May 2026. Vol. 91, p. 71870. [Accessed 14 June 2026]. DOI 10.12775/JEHS.2026.91.70870.