1. Department of Geriatric Medicine, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
2. Department of Geriatric Medicine, Manisa State Hospital, Manisa, Turkey
3. Department of Geriatric Medicine, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
4. Department of Statistics, Faculty of Science, Dokuz Eylul University, Izmir, Turkey
5. The Cambridge Centre for Sport and Exercise Sciences, Anglia Ruskin University, Cambridge, UK