Table 3.
Hemodynamic variables during supine rest on testing day in the laboratory
| Variables | Hypertensive Subjects | Normotensive Subjects | P Values |
|---|---|---|---|
| SBP, mmHg | 128 ± 2 | 112 ± 3 | <0.001 |
| DBP, mmHg | 72 ± 2 | 66 ± 2 | 0.006 |
| HR, beats/min | 66 ± 1 | 68 ± 2 | 0.374 |
| Stroke volume, ml | 61 ± 2 | 61 ± 3 | 0.744 |
| Cardiac output, l/min | 4.0 ± 0.1 | 4.1 ± 0.2 | 0.653 |
| TPR, dyn·s/cm5 | 1,708 ± 46 | 1,570 ± 66 | 0.081 |
| MSNA burst frequency, bursts/min | 40 ± 1 | 40 ± 2 | 0.986 |
| MSNA burst incidence, bursts/100 beats | 65 ± 2 | 65 ± 2 | 0.974 |
| Total activity, U/min | 573 ± 24 | 591 ± 35 | 0.650 |
Values are means ± SE. TPR, total peripheral resistance; MSNA, muscle sympathetic nerve activity.