Acute Effects of Powdered Beetroot Extract Supplementation on the Microcirculation of Resistant Hypertensive Individuals

Evaluation of systemic microvascular reactivity using laser speckle contrast imaging.

Ambulatory blood pressure measuring: systolic, diastolic and mean arterial pressures

A powdered beetroot extract supplement containing 400 mg of nitrate per dose will be used in the supplement group, administered orally at a daily amount of 10 g.