Cardiology Research and Practice

Clinical Study

Effects of Dietary Nitrates on Systemic and Cerebrovascular Hemodynamics

Table 3

Effects of beetroot juice treatment at submaximal exercise.


Variable	Control	Beetroot juice

	40% VO_2peak
Cardiac output (L·min⁻¹)
Oxygen consumption (mL·kg⁻¹·min⁻¹)
Systolic blood pressure (mm Hg)
Diastolic blood pressure (mm Hg)
Mean blood pressure (mm Hg)
Heart rate (b·min⁻¹)
Heart rate-systolic pressure product	13,452 ± 573	12,367 ± 641*

	60% VO_2peak
Cardiac output (L·min⁻¹)
Oxygen consumption (mL·kg⁻¹·min⁻¹)
Systolic blood pressure (mm Hg)
Diastolic blood pressure (mm Hg)
Mean blood pressure (mm Hg)
Heart rate (b·min⁻¹)
Heart rate-systolic pressure product	19,785 ± 912	19,264.1 ± 819*

	80% VO_2peak
Cardiac output (L·min⁻¹)
Oxygen consumption (mL·kg⁻¹·min⁻¹)
Systolic blood pressure (mm Hg)
Diastolic blood pressure (mm Hg)
Mean blood pressure (mm Hg)
Heart rate (b·min⁻¹)
Heart rate-systolic pressure product	25,337 ± 889	23,146 ± 754*

Values expressed in mean ± standard error measured at rest and at constant aerobic exercise workloads corresponding to 40%, 60% and 80% of subject’s predetermined peak oxygen consumption (VO_2peak). *Significantly different than control at .