ÇİMEN E. THE RELATIONSHIP BETWEEN THE PROACTIVE PERSONALITY OF STUDENTS AND THE LEVELS OF MENTAL STRENGTH IN THE FACULTY OF SPORTS SCIENCES: THE CASE OF SULEYMAN DEMIREL UNIVERSITY. JROLSS [Internet]. 2022 Jan. 15 [cited 2024 May 17];3(1):1-10. Available from: https://www.roljournal.com/index.php/rol/article/view/51