Effect of Acute Dietary Nitrate Supplementation on the Venous Vascular Response to Static Exercise in Healthy Young Adults

Figures

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  Figure 1. Plasma nitrate concentration before and 2h after CON and BRJ consumption. Data are shown as the mean ± standard deviation. CON: NO3−-depleted prune juice; BRJ: beetroot juice. * p < 0.05, significant difference between before and after. † p < 0.05, significant difference between CON and BRJ. Data are expressed as values for n = 16 (10 men and 6 women).

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  Figure 2. Relative changes in circulatory parameters and venous volume in the non-exercising limbs with static handgrip exercise in CON and BRJ. Percentage increases in the systolic blood pressure (SBP; (A)), diastolic blood pressure (DBP; (B)), mean arterial pressure (MAP; (C)), and heart rate (HR, (D)) and percentage decreases in venous volume in the forearm (E) and calf (F) during exercise from pre-exercise. Data are shown as the mean ± standard deviation. CON: NO3−-depleted prune juice; BRJ: beetroot juice. Data are expressed as values for n = 16 (10 men and 6 women).

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  Figure 3. Relationship between the mean arterial pressure response and venous vascular response to exercise. Changes in the absolute mean arterial pressure (MAP) at 2 min of exercise (A,C) and elevated MAP with exercise (B,D) from BRJ to CON were plotted against changes in decreased venous volume in the non-exercising forearm and calf with exercise from BRJ to CON. Associations were determined with the use of a Spearman’s rank correlation coefficient assessment. Data are expressed as values for n = 16 (10 men and 6 women).