1. Clinical Center, University of Debrecen, 4032 Debrecen, Hungary
2. Ihrig Károly Doctoral School of Management and Business, University of Debrecen, 4032 Debrecen, Hungary
3. Faculty of Health Sciences and Physical Education, Kazimierz Wielki University, 85-064 Bydgoszcz, Poland
4. Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary