Table 1.
Baseline characteristics of the two groups
| Characteristic | COPD (n=14) | Control (n=11) |
|---|---|---|
| Age (years) | 71.5 (7.5) | 65.5 (5.7)* |
| BMI | 26.5 (4.5) | 27.5 (2.4) |
| FEV1 (L) | 1.0 (0.5) | 2.5 (0.9)** |
| FEV1/FVC ratio | 38.8 (11.9) | 73.5 (5.5)** |
| Isometric strength (Nm) | 104.5 (42.8) | 132.4 (46.4) |
| CET workload (W) | 54.5 (18.6) | 114.1 (40.6)** |
| CET peak VO2 (mL/kg/min) | 15.2 (4.4) | 21.5 (5.7) |
| CET peak VE (L/min) | 30.5 (10.3) | 42.8 (16.0) |
Notes: Values are mean (SD).
*
P<0.05
**
P<0.01 between COPD and control subjects.
Abbreviations: BMI, body mass index; CET, cycle ergometry test; COPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; SD, standard deviation; VE, ventilation; VO2, oxygen consumption.