| M:F (n) | 11:9 |
| Age (years) | 61.4 (8.3) |
| Height (cm) | 168.0 (9.6) |
| Weight (kg) | 79.9 (20.9) |
| Body mass index (kg/m2) | 28.4 (7.9) |
| Smoking history (pack-years) | 47.7 (20.2) |
| Duration of COPD (years) | 9.4 (7.8) |
| Modified baseline dyspnoea index (focal score) | 5.8 (0.7) |
| FEV1 (l) | 1.16 (0.36) |
| FEV1 (% predicted) | 45 (15) |
| FEV1/FVC (%) | 42 (10) |
| FEV1/FVC (% predicted) | 59 (14) |
| FVC (l) | 2.78 (0.63) |
| FVC (% predicted) | 75 (14) |
| IC (l) | 2.19 (0.53) |
| IC (% predicted) | 82 (24) |
| FRC (l) | 4.34 (1.60) |
| FRC (% predicted) | 134 (37) |
| RV (l) | 3.45 (1.44) |
| RV (% predicted) | 162 (59) |
| sRaw (cm H2O.s) | 28.1 (13.7) |
| sRaw (% predicted) | 667 (312) |
| Tlco (ml/min/mm Hg) | 15.1 (4.2) |
| Tlco (% predicted) | 70 (17) |
Values are mean (SD).
FEV1, forced expiratory volume in 1 s; FRC, plethysmographic functional residual capacity; FVC, forced vital capacity; IC, inspiratory capacity; RV, residual volume; sRaw, specific airway resistance; Tlco, lung carbon monoxide transfer factor.