| VEF1 | Forced Expiratory Volume in 1 s |
| CVF | Forced Vital Capacity |
| VEF1/CVF | Ratio of Forced Expiratory Volume in 1 s to Forced Vital Capacity |
| RV/TLC | Residual Volume to Total Lung Capacity ratio |
| VO2 max | Maximum Oxygen Consumption |
| 6MWT | 6-Minute Walk Test |
| CF | Cystic Fibrosis |
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