Figure 2.
Effects of beetroot juice treatment on middle cerebral arterial cerebrovascular resistance index. Bars represent means ± standard errors for middle cerebrovascular resistance index, computed as the ratio mean arterial blood pressure/mean middle cerebral artery blood flow velocity, expressed in mm Hg·cm−1·s−1. The study subjects were 12 healthy, normotensive young adult African-American females. Left panel: placebo control orange juice treatment. Right panel: beetroot juice treatment. *Difference between control and beetroot juice treatments statistically significant at P < 0.05.