Table 2 Results of 6MWT in COPD patients, synchronized and desynchronized group
Pre- and post-exercise (6MWT) | COPD (n = 55) | Synchronized (n = 43) | Desynchronized (n = 12) | p-value |
|---|---|---|---|---|
Pre-FVC, L | 2.6 (1.2–4.4) | 2.7 (1.2–4.4) | 2.45 (1.3–3.3) | 0.28 |
Pre-FVC, % | 78.7 (38–129) | 82.5 (39–129) | 77 (38–96) | 0.89 |
Pre-FEV1, L | 1.5 (0.5–2.7) | 1.39 (0.6–2.7) | 1.43 (0.5–2.0) | 0.49 |
Pre-FEV1, % | 56.7 (18–102) | 55.5 (18–102) | 62.5 (18–76) | 0.79 |
Pre-FEV1/FVC | 0.56 (0.31–0.72) | 0.57 (0.31–0.72) | 0.56 (0.35–0.7) | 0.64 |
Post-FVC, L | 2.7 (1.1–4.4) | 2.7 (1.1–4.4) | 2.7 (1.4–3.3) | 0.29 |
Post-FVC, % | 81 (42–130) | 81.5 (42–130) | 87 (43–96) | 0.78 |
Post-FEV1, L | 1.47 (0.53–2.82) | 1.44 (0.67–2.82) | 1.49 (0.53–2.09) | 0.53 |
Post-FEV1, % | 60 (21–105) | 57 (22–105) | 60 (21–79) | 0.60 |
Post-FEV1/FVC | 0.59 (0.35–0.73) | 0.59 (0.35–0.73) | 0.56 (0.37–0.70) | 0.62 |
Pre-HR, beats/min | 83 (57–109) | 83.5 (57–109) | 80.5 (60–98) | 0.66 |
Post-HR, beats/min | 107 (69–149) | 108 (69–149) | 105 (70–122) | 0.48 |
Pre-Borg | 0 (0–3) | 0 (0–3) | 1 (0–3) | 0.06 |
Post-Borg | 4 (1–7) | 4 (2–7) | 4 (1–7) | 0.77 |
pre-spO2, % | 95 (88–99) | 95.5 (88–99) | 95 (90–98) | 0.31 |
post-spO2, % | 90.5 (75–96) | 90.5 (75–96) | 90 (80–95) | 0.61 |
pre-IC, ml | 1.78 (0.92–2.77) | 1.78 (1.07–2.77) | 1.73 (0.92–2.04) | 0.20 |
post-IC, ml | 1.73 (0.94–2.83) | 1.73 (0.97–2.83) | 1.7 (0.94–2.43) | 0.45 |
∆IC, ml | 0 (− 1.1–0.55) | − 0.02 (− 0.49—0.55) | 0.11(− 1.1–0.28) | 0.37 |
∆spO2, % | − 4.5 (− 22 ~ 0) | − 4.5 (− 22 ~ 0) | − 4.0 (− 18 ~ 0) | 0.97 |
Distance, m | 456 (182–624) | 468 (328–624) | 408 (182–517) | 0.03 |
DSP, m% | 411.1 (149.2–536.6) | 421.2 (255.6–536.6) | 373.2 (149.2–464.6) | 0.04 |