R. Fox, Kenneth, and Aphrodite Stathi. “Psysical Activity and Mental Health in Older Adults: Current Evidence and Future Perspectives”. Psychology: the Journal of the Hellenic Psychological Society 9, no. 4 (October 15, 2020): 563–580. Accessed May 29, 2025. https://ejournals.epublishing.ekt.gr/index.php/psychology/article/view/24070.