Inert gas rebreathing measurements during submaximal constant-load exercise
| Baseline | Follow-up | p Value | |
| HR, beats/min | |||
| Supine rest | 81±15 | 79±11 | 0.519 |
| Erect rest | 84±16 | 80±11 | 0.155 |
| Exercise | 114±18 | 112±16 | 0.274 |
| Exercise response* | 31±9 | 33±11 | 0.408 |
| PBF, l/min | |||
| Supine rest | 4.0±1.0 | 4.7±1.4 | 0.002 |
| Erect rest | 3.2±0.6 | 3.9±0.9 | <0.001 |
| Exercise | 5.3±1.7 | 5.7 (4.1–8.1) | 0.003 |
| Exercise response* | 2.1±1.5 | 2.1±1.6 | 0.921 |
| SV, ml | |||
| Supine rest | 53±22 | 58 (44–68) | 0.002 |
| Erect rest | 40±13 | 50±15 | <0.001 |
| Exercise | 48±18 | 56±21 | 0.004 |
| Exercise response* | 8±12 | 5±13 | 0.176 |
Data are expressed as mean±SD or median (IQR).
* Defined as change from rest to end of exercise.
HR, heart rate; PBF, pulmonary blood flow; SV, stroke volume.