Table 2.
Seasonal variation of hemodynamic parameters
| Cool season | Warm season | P value | |
|---|---|---|---|
| Blood pressure at office | |||
| Systolic, mmHg | 132.5 ± 14.6 | 124.7 ± 15.6 | 0.02 |
| Diastolic, mmHg | 80.1 ± 13.9 | 76.0 ± 10.3 | 0.07 |
| Blood pressure at home | |||
| Systolic, mmHg | 124.5 ± 15.6 | 116.7 ± 8.9 | 0.02 |
| Diastolic, mmHg | 76.0 ± 10.3 | 71.9 ± 10.2 | 0.04 |
| Heart rate, beats/min | 68.6 ± 9.2 | 69.0 ± 8.3 | NS |
| Antihypertensive drugs, n | 2.0 ± 1.2 | 2.0 ± 1.2 | NS |
| Brachial artery diameter | |||
| Resting, mm | 3.96 ± 0.63 | 4.08 ± 0.59 | 0.04 |
| Maximal, mm | 4.14 ± 0.62 | 4.31 ± 0.57 | 0.006 |
| FMD | |||
| Relative, % | 4.74 ± 2.15 | 5.71 ± 2.17 | 0.03 |
| Absolute, mm | 0.18 ± 0.08 | 0.23 ± 0.07 | 0.008 |
Data are mean ± SD. FMD: flow-mediated dilation.