Table 2.
Summary of hemodynamic data obtained at rest and during a brief cessation from physical exercise averaged for 5 healthy subjects. AA: ascending aorta, DA: descending aorta, MPA: main pulmonary artery. Significant difference between rest and exercise was observed for heart rate, mean AA flow, mean DA flow, mean MPA flow and RAC of MPA. Data are expressed as mean ±SD. P value <0.05 indicates statistically significant difference between rest and exercise conditions.
| Hemodynamic parameter | Rest | Exercise a | % change of mean | Statistical significance |
|---|---|---|---|---|
| Heart rate (bpm) | 59.0 ± 8.9 | 83.6 ± 22.2 | 41.7 | P < 0.05 |
| Peak AA flow (mL/s) | 28.3 ± 4.4 | 31.9 ± 4.8 | 12.7 | — |
| Mean AA flow (cardiac output) (mL/s) | 5.94 ± 0.7 | 8.3 ± 1. 8 | 39.7 | P < 0.05 |
| Peak DA flow (mL/s) | 18.1 ± 2.1 | 20.4 ± 1.5 | 12.7 | — |
| Mean DA flow (mL/s) | 4.2 ± 0.6 | 6.0 ± 1.1 | 42.9 | P < 0.05 |
| Peak MPA flow (mL/s) | 25.3 ± 5.5 | 29.6 ± 7.6 | 17.0 | — |
| Mean MPA flow (mL/s) | 4.9 ± 1.1 | 7.3 ± 2.5 | 49.0 | P < 0.05 |
| Stroke volume (mL) | 71.7 ± 7.7 | 72.8 ± 11.7 | 1.5 | — |
| RAC of the MPA (%) | 0.4 ± 0.2 | 0.3 ± 0.1 | −25.0 | P < 0.05 |
| Workload (W) | 0 | 50 ± 5 | — | — |
a
All “Exercise” values are measured during a brief cessation from the exercise (except the workload).