| Mean | 95% CI | P-value* |
---|---|---|---|
Endurance time, min | |||
 Baseline test | 3.9 | 1.7–6.2 | Ref. |
 VM | 7.6 | 5.3–9.8 | 0.076 |
 HFNC | 6.8 | 4.6–9.0 | 0.226 |
Min SpO2, % | |||
 Baseline test | 77.7 | 73.8–81.6 | Ref. |
 VM | 89.4 | 85.5–93.3 | <  0.001 |
 HFNC | 89.7 | 85.8–93.5 | < 0.001 |
Max HR, bpm | |||
 Baseline test | 121.2 | 113.2–129.1 | Ref. |
 VM | 124.2 | 116.2–132.1 | 1.000 |
 HFNC | 120.8 | 112.8–128.8 | 1.000 |
Isotime Borg scale (dyspnea) | |||
 Baseline test | 6.6 | 5.4–7.7 | Ref. |
 VM | 4.5 | 3.4–5.6 | 0.040 |
 HFNC | 3.9 | 2.8–5.1 | 0.006 |
Isotime Borg scale (leg fatigue) | |||
 Baseline test | 6.0 | 4.7–7.3 | Ref. |
 VM | 4.3 | 3.0–5.6 | 0.188 |
 HFNC | 3.7 | 2.4–4.9 | 0.035 |
Final Borg scale (dyspnea) | |||
 Baseline test | 6.9 | 5.8–7.9 | Ref. |
 VM | 7.0 | 5.9–8.0 | 1.000 |
 HFNC | 6.6 | 5.5–7.7 | 1.000 |
Final Borg scale (leg fatigue) | |||
 Baseline test | 6.2 | 4.7–7.6 | Ref. |
 VM | 6.4 | 5.0–7.8 | 1.000 |
 HFNC | 6.3 | 4.9–7.7 | 1.000 |