Show simple item record

dc.contributor.authorLiu, A.
dc.contributor.authorBondonno, C.
dc.contributor.authorCroft, K.
dc.contributor.authorPuddey, I.
dc.contributor.authorWoodman, R.
dc.contributor.authorRich, L.
dc.contributor.authorWard, Natalie
dc.contributor.authorVita, J.
dc.contributor.authorHodgson, J.
dc.identifier.citationLiu, A. and Bondonno, C. and Croft, K. and Puddey, I. and Woodman, R. and Rich, L. and Ward, N. et al. 2013. Effects of a nitrate-rich meal on arterial stiffness and blood pressure in healthy volunteers. Nitric Oxide. 35: pp. 123-130.

An increase in nitrate intake can augment circulating nitrite and nitric oxide. This may lead to lower blood pressure and improved vascular function. Green leafy vegetables, such as spinach, are rich sources of nitrate. We aimed to assess the acute effects of a nitrate-rich meal containing spinach on arterial stiffness and blood pressure in healthy men and women. Twenty-six participants aged 38–69 years were recruited to a randomized controlled cross-over trial. The acute effects of two energy-matched (2000 kJ) meals, administered in random order, were compared. The meals were either high nitrate (220 mg of nitrate derived from spinach [spinach]) or low nitrate [control]. Outcome measurements were performed pre-meal and at specific time points up to 210 min post meal. Spinach resulted in an eightfold increase in salivary nitrite and a sevenfold increase in salivary nitrate concentrations from pre-meal (P < 0.001) to 120 min post meal. Spinach compared with control resulted in higher large artery elasticity index (P < 0.001), and lower pulse pressure (P < 0.001) and systolic blood pressure (P < 0.001). Post meal carotid–femoral pulse wave velocity (P = 0.07), augmentation index (P = 0.63), small artery elasticity index (P = 0.98) and diastolic blood pressure (P = 0.13) were not significantly altered by spinach relative to control. Therefore, consumption of a nitrate-rich meal can lower systolic blood pressure and pulse pressure and increase large artery compliance acutely in healthy men and women. If sustained, these effects could contribute to better cardiovascular health.

dc.titleEffects of a nitrate-rich meal on arterial stiffness and blood pressure in healthy volunteers
dc.typeJournal Article
dcterms.source.titleNitric Oxide - Biology and Chemistry
curtin.departmentSchool of Biomedical Sciences
curtin.accessStatusFulltext not available

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record