Table 1.
Baseline characteristics and hemodynamics during the EF and ML phases
| Nonsmokers | Smokers | P Value | |
|---|---|---|---|
| n | 11 | 11 | |
| Age, yr | 30.1±2.1 | 31.6±2.4 | 0.63 |
| Body mass index, kg/m2 | 23.8±1.3 | 25.8±1.8 | 0.36 |
| Early follicular phase | |||
| MAP, mmHg | 83.9±4.0 | 84.0±3.4 | 0.99 |
| SBP, mmHg | 120.1±6.1 | 116.8±4.5 | 0.67 |
| DBP, mmHg | 65.8±3.1 | 67.5±3.2 | 0.70 |
| HR, beats/min | 72.0±3.8 | 69.3±4.5 | 0.65 |
| MSNA, bursts/min | 17.9±2.8 | 26.8±4.0 | 0.082 |
| MSNA, bursts/100 HB | 25.0±3.6 | 38.8±5.0 | 0.039* |
| Midluteal phase | |||
| MAP, mmHg | 76.3±3.3 | 76.7±2.8 | 0.97 |
| SBP, mmHg | 110.2±5.1 | 109.8±4.4 | 0.96 |
| DBP, mmHg | 59.2±2.5 | 60.1±2.3 | 0.79 |
| HR, beats/min | 68.9±2.9 | 76.3±3.9 | 0.15 |
| MSNA, bursts/min | 22.7±3.3 | 22.5±3.8 | 0.96 |
| MSNA, bursts/100 HB | 32.6±4.0 | 30.3±5.6 | 0.73 |
| Smoking history | |||
| Cigarettes smoked per day (mean) | 8.0±1.3 | ||
| Years of smoking | 8.3±2.5 |
Values are means ± SE of measurements during the early follicular (EF) and midluteal (ML) phases of the ovulatory cycle; n = no. of subjects. MAP, mean arterial pressure; SBP, systolic blood pressure; DBP, diastolic blood pressure; HR, heart rate. Muscle sympathetic nerve activity (MSNA) is shown as both bursts per minute and bursts per 100 heart beats (HB).
*
P < 0.05.