Values at the inflection point
| Patients (n=45) | Controls (n=21) | p Value | |
|---|---|---|---|
| Values are means (SD). | |||
| *IP, inflection point; V̇eqco2, ventilatory equivalent for carbon dioxide; V̇eqo2, ventilatory equivalent for oxygen. | |||
| Time to inflection (s) | 271 (110) | 502 (196) | <0.0001 |
| Vt (l) | 1.6 (0.3) | 2.2 (0.6) | 0.0001 |
| f (breaths/min) | 25.8 (5.8) | 20.7 (3.8) | 0.0004 |
| V̇E (l/min) | 40.0 (14.5) | 44.6 (10.8) | 0.2 |
| V̇E as % peak VE | 61.6 (14.4) | 50.5 (12.8) | <0.004 |
| V̇E as %MVV | 47.7 (11.8) | 39.0 (8.6) | 0.003 |
| V̇E/Vt slope before IP | 21.6 (6.8) | 15.8 (4.1) | 0.0007 |
| V̇eqo2 | 33.1 (6.6) | 19.9 (2.2) | <0.0001 |
| V̇eqco2 | 38.1 (5.4) | 24.8 (2.7) | <0.0001 |
| V̇o2 (ml/kg/min) | 15.1 (3.5) | 26.9 (7.3) | <0.0001 |
| Borg score | 3.7 (2.2) | 2.8 (1.7) | 0.1 |