Normoxia | Hypoxia | |||
---|---|---|---|---|
Rest | Peak exercise | Rest | Peak exercise | |
Data are presented as mean (SD). | ||||
*p < 0.01 v normal controls; †p < 0.01 v normoxia. | ||||
Heart failure patients | ||||
Ventilation (l/min) | 11 (2) | 58 (18)* | 28 (6)† | 57 (19)* |
Tidal volume (l) | 0.6 (0.1) | 1.6 (0.4)* | 1.3 (0.2)*† | 1.6 (0.4)* |
Respiratory rate (beats/min) | 19 (4)* | 37 (7) | 21 (4)* | 36 (7) |
Normal controls | ||||
Ventilation (l/min) | 10 (2) | 69 (19) | 28 (5)† | 72 (18) |
Tidal volume (l) | 0.6 (0.1) | 2.1 (0.6) | 1.5 (0.3)† | 2.3 (0.6) |
Respiratory rate (beats/min) | 15 (4) | 34 (5) | 18 (3) | 32 (8) |