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. 2012 May 15;2(2):111–115.

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.