Table 2

Summary of outcome data for 18 subjects who completed the study

Cylinder before/after
Air/airOxygen/airAir/oxygen
Maximum dyspnoea on VAS (mm)49.1 (27.3)42.8 (23.2)40.6 (21.0)
Δ Maximum dyspnoea from 1st ascent (mm)12.6 (19.5)18.9 (22.2)21.1 (18.7)
Δ Time of ascent from 1st ascent (s)5.6 (5.8)6.1 (6.4)4.7 (4.9)
Maximum Δ saturation (%)8.2 (3.0)4.9 (2.7)6.4 (2.2)
  • Values are mean (SD).