| Nominative | fitnesscentrum |
| Genitive | fitnesscentra |
| Dative | fitnesscentru |
| Accusative | fitnesscentrum |
| Locative | fitnesscentre; fitnesscentru |
| Instrumental | fitnesscentrom |
| Nominative | fitnesscentrá |
| Genitive | fitnesscentier |
| Dative | fitnesscentrám |
| Accusative | fitnesscentrá |
| Locative | fitnesscentrách |
| Instrumental | fitnesscentrami |