Table 1

Subject characteristics

Value% pred
Subjects n23
Males %65
Age yrs64±2
Body mass index kg·m−226.1±0.8
Cigarette smoking history pack-yrs48±5
Baseline dyspnoea index focal score5.3±0.3
FEV1 L1.08±0.0842±3
FEV1/FVC %46±266±3
FVC L2.33±0.1462±3
TLC L7.32±0.25122±3
IC L1.81±0.1065±3
FRC L5.51±0.22172±6
RV L4.63±0.20216±10
DL,CO/VA mL·min−1·mmHg−1·L−13.03±0.1881±5
  • Data are presented as mean±sem

  • FEV1: forced expiratory volume in one second

  • FVC: forced vital capacity

  • TLC: total lung capacity

  • IC: inspiratory capacity

  • FRC: functional residual capacity

  • RV: residual volume

  • DL,CO: single-breath diffusing capacity of the lung for carbon monoxide

  • VA: alveolar volume

  • % pred: per cent predicted

  • 1 mmHg=0.133 kPa