Chruścińska A, Smoleńska O, Muszkieta R, Hagner-Derengowska M, Michalska A. Age-Related Differences in Motivations and Barriers to Physical Activity: A Cross- Sectional Analysis Across the Lifespan. J Educ Health Sport [Internet]. 2026 May 23 [cited 2026 Jun. 14];91:71870. Available from: https://apcz.umk.pl/JEHS/article/view/71870