Selected mean (SD) clinical data on the study patients
| No. of patients | 11 |
| Age (years) | 63 (10.6) |
| FEV1 (l) | 0.89 (0.37) |
| FEV1 (% predicted) | 25.8 (9.4) |
| FVC (l) | 2.10 (0.75) |
| FEV1/FVC (%) | 43 (8.5) |
| Haemoglobin (%) | 14.8 (1.1) |
| TGV (% predicted) | 231 (90.2) |
| Dyspnoea (grade) | 4.78 (2.17) |
| Peak work rate (watts) | 23.5 (22.9) |
| Exercise time (s) | 165 (95) |
| Duration of COPD (years) | 12 (4) |
| Smoking history (pack years) | 21 (8) |
FEV1 = forced expiratory volume in one second; FVC = forced vital capacity; TGV = thoracic gas volume at functional residual capacity.