| Nominative | fitcentrum |
| Genitive | fitcentra |
| Dative | fitcentru |
| Accusative | fitcentrum |
| Vocative | fitcentrum |
| Locative | fitcentru |
| Instrumental | fitcentrem |
| Nominative | fitcentra |
| Genitive | fitcenter |
| Dative | fitcentrům |
| Accusative | fitcentra |
| Vocative | fitcentra |
| Locative | fitcentrech |
| Instrumental | fitcentry |