| Outcome | Pre-PR | Post-PR | Change with PR | p-value |
| 4MGS m·s−1 | 0.90±0.22 | 0.98±0.22 | 0.08±0.13 | <0.001 |
| ISW m | 200 (100–330) | 250 (155–380) | 50 (10–95) | <0.001 |
| ISW % predicted | 33 (17–53) | 43 (26–66) | 8 (2–16) | <0.001 |
| MRC dyspnoea score | 3 (2–4) | 3 (2–3) | −1 (−1–0) | <0.001 |
| CAT score | 22 (16–27) | 19 (13–24) | −2 (−7–1) | <0.001 |
| SGRQ score | ||||
| Symptoms domain | 67.0 (51.5–79.0) | 61.1 (48.4–76.6) | −3.1 (−13.1–3.3) | <0.001 |
| Activities domain | 72.3 (59.5–85.5) | 72.3 (53.5–85.8) | −0.2 (−12.7–6.6) | <0.01 |
| Impacts domain | 36.0 (24.0–48.0) | 30.4 (20.7–44.0) | −4.0 (−12.8–2.2) | <0.001 |
| Total score | 51.4 (41.2–62.7) | 48.1 (35.4–58.8) | −3.8 (−11.0–2.5) | <0.001 |
| CRQ total score | 73 (59–92) | 91 (74–108) | 15 (4–27) | <0.001 |
Data are presented as mean±sd or median (interquartile range), unless otherwise stated. n=301. 4MGS: 4-m gait speed; ISW: incremental shuttle walk; MRC: Medical Research Council; CAT: COPD Assessment Test; SGRQ: St George’s Respiratory Questionnaire; CRQ: Chronic Respiratory Questionnaire.