Clinical Study

Effects of Nitrate Supplementation on Cardiovascular and Autonomic Reactivity in African-American Females

Table 3

Cardiac autonomic responses at baseline and during submaximal exercise with nitrate-rich beetroot juice compared to control ( ).

VariableBeetroot juiceControl

HF (nu)
LF (nu)
LF/HF

40% VO2peak
HF (nu)
LF (nu)
LF/HF

80% VO2peak
HF (nu)
LF (nu)
LF/HF

Values are means ± standard errors. HF: high frequency; LF: low frequency; nu: normalized unit.