Table 1—

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 patientsControls
Before programmeAfter programme
Subjects n212118
Age yrs62±966±1
BMI kg·m−226.4±3.326.9±3.625.4±3.5
Pulmonary function
 FEV1 L1.32±0.451.30±0.42
  % pred43.6±18.143.5±14.5
 VC L2.84±0.732.90±0.67
  % pred74.2±18.775.0±17.9
 FEV1/VC %47±1246±12
 RV L4.38±1.574.54±1.42
  % pred185.6±62.1193.1±56.5
 TLC L7.26±1.577.55±1.26
  % pred112.2±24.1116.7±17.3
Pa,O2 kPa8.96±1.188.83±0.93
Pa,CO2 kPa4.83±0.545.05±0.57
Maximal exercise capacity
 Workload W72.7±21.984.7±27.8**
 Peak V'O2 mL·min−11083±2981319±513*
  mL·min−1·kg body weight−114.1±3.315.2±4.0
V'CO2 mL·min−11150±4061319±513**
V'E L·min−144.4±13.645.8±14.6
fc beats·min−1136±16137±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