Wybraniec, Agnieszka, Miłosz Boguszewski, Norbert Nizio, Justyna Wyszyńska, and Justyna Drzał-Grabiec. “Selected Factors Influencing Physical Fitness in the Elderly”. European Journal of Clinical and Experimental Medicine 17, no. 1 (March 30, 2019): 45–50. Accessed January 18, 2026. https://journals.ur.edu.pl/ejcem/article/view/11752.