Characteristics of chronic obstructive pulmonary disease (COPD) patients and controls, and pulmonary function and maximal exercise capacity in patients before and after rehabilitation programme
| COPD patients | Controls | ||
| Before programme | After programme | ||
| Subjects n | 21 | 21 | 18 |
| Age yrs | 62±9 | 66±1 | |
| BMI kg·m−2 | 26.4±3.3 | 26.9±3.6 | 25.4±3.5 |
| Pulmonary function | |||
| FEV1 L | 1.32±0.45 | 1.30±0.42 | |
| % pred | 43.6±18.1 | 43.5±14.5 | |
| VC L | 2.84±0.73 | 2.90±0.67 | |
| % pred | 74.2±18.7 | 75.0±17.9 | |
| FEV1/VC % | 47±12 | 46±12 | |
| RV L | 4.38±1.57 | 4.54±1.42 | |
| % pred | 185.6±62.1 | 193.1±56.5 | |
| TLC L | 7.26±1.57 | 7.55±1.26 | |
| % pred | 112.2±24.1 | 116.7±17.3 | |
| Pa,O2 kPa | 8.96±1.18 | 8.83±0.93 | |
| Pa,CO2 kPa | 4.83±0.54 | 5.05±0.57 | |
| Maximal exercise capacity | |||
| Workload W | 72.7±21.9 | 84.7±27.8** | |
| Peak V'O2 mL·min−1 | 1083±298 | 1319±513* | |
| mL·min−1·kg body weight−1 | 14.1±3.3 | 15.2±4.0 | |
| V'CO2 mL·min−1 | 1150±406 | 1319±513** | |
| V'E L·min−1 | 44.4±13.6 | 45.8±14.6 | |
| fc beats·min−1 | 136±16 | 137±17 | |
Data are presented as mean±sd. BMI: body mass index; FEV1: forced expiratory volume in one second
VC: vital capacity
RV: residual volume
TLC: total lung capacity
Pa,O2: arterial oxygen tension
Pa,CO2: arterial carbon dioxide tension
V'O2: oxygen consumption
V'CO2: carbon dioxide production
V'E: minute ventilation
fc: cardiac frequency
% pred: per cent predicted
*: p<0.05
**: p<0.01