Table 2. Brachial artery studies before supplementation. Data are means (± SE).
Folic Acid Group
(n = 8)
Placebo Group
(n = 5)
Heart rate (min) 71 (5) 55 (3) *
Mean arterial pressure
   Systolic (mmHg) 105.3 (2.8) 106.4 (1.8)
   Diastolic (mmHg) 64.9 (2.8) 60.8 (2.3)
Temperature (°C) 22.8 (.3) 23.2 (.5)
Humidity 33.8 (1.8) 42.0 (1.3) *
Baseline brachial
artery diameter (mm)
3.1 (.1) 3.4 (.2)
Peak brachial
artery diameter (mm)
3.3 (.1) 3.6 (.2)
Flow-mediated dilation (%) 6.6 (.8 ) 6.5 (.7)
Peak change in flow velocity (%) 93.2 (9.4 ) 121.0 (5.5)
* denotes p < 0.05 according to Exact Wilcoxon Rank-Sum Test.