Acute effects of oxygen on exercise tolerance and dyspnoea at baseline (data presented as mean values with 95% confidence intervals, n = 25)
| Air cylinder | Oxygen cylinder | Difference (95% CI) | p value | |
| SWT (m) | 149.1 | 176.4 | 27.3 (14.7 to 39.8) | <0.001 |
| Borg score | 4.20 | 3.52 | –0.68 (–1.05 to –0.31) | <0.001 |
p value represents difference between oxygen and placebo air walk.
SWT = Shuttle Walk Test.