Table 1.
Baseline characteristics of the two groups of COPD patients following SPR program and UPR program
| SPR group of patients (n=30) | UPR group of patients (n=30) | P-value | |
|---|---|---|---|
| Age (years) | 69±5.8 | 72±8 | 0.143 |
| Sex, female (%) | 5 (16.7) | 6 (20) | 0.738 |
| BMI (kg/m2) | 25±4 | 26±5 | 0.165 |
| Smoking (pack years) | 53±31 | 58±36 | 0.571 |
| FEV1 (% pred) | 46±14 | 51±16 | 0.192 |
| VC (% pred) | 81±16 | 81±15 | 0.918 |
| FEV1/VC (%) | 40±12 | 44±12 | 0.269 |
| RV (% pred) | 191±48 | 176±46 | 0.211 |
| TLC (% pred) | 129±20 | 125±25 | 0.540 |
| RV/TLC (%) | 61±9 | 60±8 | 0.793 |
| TL,CO (% pred) | 52±13 | 50±13 | 0.433 |
| PaO2 (mmHg) | 74±7 | 71±7 | 0.159 |
| PaCO2 (mmHg) | 37±4 | 38±5 | 0.234 |
| Exacerbations previous year (n) | 1.1±1.3 | 1.2±1.4 | 0.902 |
| 1-RM (kg) | 33±7 | 30±10 | 0.212 |
| 1-minute STST (n) | 24±4 | 23±5 | 0.237 |
| 30-second STST (n) | 13±3 | 13±2 | 0.731 |
| 6MWT (m) | 450±84 | 417±92 | 0.154 |
Notes: Values are expressed as mean ± SD or percent. Comparisons between variables were determined by unpaired t-test and χ2 test. The two groups were matched for age, sex, and disease severity.
Abbreviations: SD, standard deviation; FEV1, forced respiratory volume in 1 second; VC, vital capacity; RV, residual volume; TLC, total lung capacity; TL,CO, transfer factor of the lung for carbon monoxide; BMI, body mass index; PaO2, arterial partial pressure of oxygen; PaCO2, arterial partial pressure of carbon dioxide; 1-RM, one-repetition maximum; STST, sit-to-stand test; 6MWT, 6-minute walking test; pred, predicted; SPR, specific pulmonary rehabilitation; UPR, usual pulmonary rehabilitation.