From: The effect of volitional breathing on the breathlessness-ventilation relationship during progressive exercise in healthy subjects
Control
Volitional
Breathlessness index
(mean ± SEM)
P
VAS/VE slope (mmmin l-1)
0.86 ± 0.10
0.97 ± 0.11
P = 0.307
VAS/VE Intercept (lmin-1)
45.50 ± 4.29
54.34 ± 4.91
P = 0.009