Characteristics of the study population
| Age (years) | 68.1±10.5 |
| Sex, male (%) | 49.6 |
| BMI (kg/m2) | 26.9±6.5 |
| FEV1 (%predicted) | 49.7±19.7 |
| FEV1/FVC | 46.1±13.9 |
| Pre-ISWT (m) | 256±148 |
| Pre-6MWT (m) | 238±104.4 |
| PR completion (%) | 57.1 |
| Pre-CAT | 21±8 |
| Pre-CRDQ_Total | 14.4±4.6 |
| Pre-CRDQ_D | 2.8±1.3 |
| Pre-CRDQ_E | 4.1±1.5 |
| Pre-CRDQ_F | 3.5±2 |
| Pre-CRDQ_M | 4.3±1.7 |
| Pre-HAD-A | 7.9±4.8 |
| Pre-HAD-D | 7±4 |
| Pre-MRC | 3.3±0.9 |
6MWT, 6 min walking test; BMI, Body Mass Index; CRDQ, Chronic Respiratory Disease Questionnaire; CRDQ_D, CRDQ Dyspnoea domain; CRDQ_E, CRDQ Emotional function domain; CRDQ_F, CRDQ Fatigue domain; CRDQ_M, CRDQ Mastery domain; FEV1, Forced Expiratory Volume in 1 s; FVC, Forced Vital Capacity; HAD, Hospital Anxiety (A) and Depression (D) Scale; ISWT, Incremental Shuttle Walking Test; MRC, Medical Research Council Dyspnoea Scale; PR, Pulmonary rehabilitation.