TABLE 3

Numeric rating scale scores on duration (1: very unpleasant, 10: very pleasant), breathing comfort (1: very unpleasant, 10: very pleasant) and dyspnoea sensation (1: not dyspnoeic, 10: very dyspnoeic) for rebreathing and steady-state for the first and second measurements

Measurement 1Measurement 2
RebreathingSteady-stateRebreathingSteady-state
Duration6.0 (5.0–7.0)5.5 (4.0–7.8)5.5 (5.0–6.8)6.0 (5.0–7.0)
Breathing comfort5.0 (4.0–6.0)6 .0 (5.0–7.0)4.5 (4.0–5.8)6.0 (4.0–7.0)
Dyspnoea sensation4.0 (4.0–5.8)3.5 (2.3–4.8)4.0 (4.0–6.0)4.0 (2.3–5.0)

Data are presented as median (interquartile range).