Physiological responses at peak cycling exercise and during the last minute of the 6-min walking test (6MWT)
| Peak cycling | 6MWT (6th min) | p-value | |
| Work rate w | 82±21 | ||
| 6MWT m | 539±56 | ||
| V′O2 L·min−1 | 1.41±0.18 | 1.40±0.29 | |
| V′CO2 L·min−1 | 1.45±0.18 | 1.30±0.31 | 0.02 |
| RER | 1.04±0.08 | 0.92±0.07 | 0.001 |
| V′E L·min−1 | 47±8 | 42±8 | 0.01 |
| V′E %MVV | 99±35 | 91±34 | |
| fC beat·min−1 | 130±13 | 126±13 | |
| fC % pred | 85±9 | 82±9 | |
| Pa,O2# mmHg | 73±13 | 77±15 | |
| Pa,CO2# mmHg | 47±8 | 46±8 | |
| [La]art# mmol·L−1 | 5.91±1.51 | 2.92±1.99 | 0.003 |
V′O2: oxygen untake
V′CO2: carbon dioxide production
RER: respiratory exchange ratio
V′E: minute ventilation
fC: cardiac frequency
Pa,O2: oxygen tension in arterial blood
Pa,CO2: carbon dioxide tension in arterial blood
[LA]art: arterial lactate concentration
% pred: % predicted
n=20 patients
#: n=10 patients, in whom these measurements were performed