Mean (SD) baseline characteristics
| COPD patients(n = 18) | Healthy controls(n = 8) | |
|---|---|---|
| FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; Spo2, oxygen saturation; BMI, body mass index. | ||
| *p<0.001 compared with COPD patients. | ||
| F/M | 3/15 | 2/6 |
| Age (years) | 66 (8.1) | 64 (6.1) |
| FEV1 (l) | 1.12 (0.4) | 2.92 (0.62)* |
| FEV1 (% predicted) | 38.1 (16.8) | 100.9 (21.6)* |
| FVC (l) | 3.02 (0.73) | 3.57 (0.81) |
| Spo2 at rest (%) | 95.4 (1.5) | 97.6 (1.06)* |
| BMI (kg/m2) | 24.7 (4.2) | 25.2 (2.6) |