| Parameter | Subjects n | Pre-exposure | Post-exposure | p-value |
| VTI cm | 12 | 20.7±2.2 | 20.1±4.1 | NS |
| CO mL·min−1 | 11 | 8374.1±1020.3 | 7855.5±2040.9 | NS |
| LVEF % | 10 | 67.8±2.7 | 69.2±5.8 | NS |
| Heart rate beats·min−1 | 11 | 66.9±9.7 | 65.3±12.3 | NS |
| Stroke volume mL | 12 | 127.1±16.2 | 124.6±30.1 | NS |
| Aortic diameter mm | 12 | 27.6±3.2 | 28.4±2.9 | 0.07 |
| LV end-diastolic diameter mm | 12 | 50.2±4.5 | 48.7±4.3 | <0.05 |
| LV end-systolic diameter mm | 12 | 33.8±3.2 | 32.3±4.2 | 0.06 |
Data are presented as mean±sd, unless otherwise stated. VTI: velocity time integral ratio; CO: cardiac output; LVEF: left ventricular (LV) ejection fraction (Teicholz method); NS: not significant.