Anthropometric characteristics and baseline respiratory data of chronic obstructive pulmonary disease patients
| All patients | Patients with basal IC <80% pred | Patients with basal IC >80% pred | p‐value | |
| Patients n | 20 | 12 | 8 | |
| Sex M/F | 14/6 | 9/3 | 5/3 | 0.92 |
| IC % pred | 74±3 | 64±2 | 89±2 | <0.001 |
| Age yrs | 65±2 | 66±2 | 64±3 | 0.57 |
| Height cm | 166±2 | 167±2 | 164±3 | 0.39 |
| Weight kg | 73±2 | 72±3 | 74±4 | 0.68 |
| BMI kg·m−2 | 26.5±1.1 | 27.4±1.2 | 25.3±2.3 | 0.39 |
| FEV1 % pred | 52±3 | 46±3 | 60±4 | 0.01 |
| FVC % pred | 79±4 | 76±5 | 83±7 | 0.41 |
| FEV1/FVC % pred | 44±3 | 41±3 | 49±4 | 0.12 |
| FRC % pred | 134±3 | 145±8 | 118±9 | 0.04 |
| TLC % pred | 110±4 | 115±4 | 103±6 | 0.10 |
| Pa,O2 mmHg | 74±2 | 72±2 | 77±2 | 0.04 |
| Pa,CO2 mmHg | 40±2 | 41±1 | 38±2 | 0.16 |
| MRC dyspnoea score | 1.9±0.3 | 2.3±0.3 | 1.5±0.3 | 0.04 |
| Baseline VAS score % (range) | 31±4 (10–61) | 38±4 (10–61) | 21±3 (11–44) | 0.03 |
| Current smoker n | 9 | 5 | 4 | 0.92 |
| Pack-yrs | 46±7 | 53±6 | 37±3 | 0.04 |
Data are presented as mean±sem unless otherwise stated
p‐Values pertain to differences between subjects with basal inspiratory capacity (IC) higher and lower than 80% predicted
M: male
F: female
BMI: body mass index
FEV1: forced expiratory volume in one second
FVC: forced expiratory capacity
FRC: functional residual capacity
TLC: total lung capacity
Pa,O2: arterial oxygen tension
Pa,CO2: arterial carbon dioxide tension
MRC: Medical Research Council
VAS: visual analogue scale (standard version)