Cited by 67Nitric Oxide and Endothelin EffectsCardiovascular Health and Disease PreventionCardiovascular and exercise physiology

Acute Supplementation with Nitrate-Rich Beetroot Juice Causes a Greater Increase in Plasma Nitrite and Reduction in Blood Pressure of Older Compared to Younger Adults

Open access
Stanaway, Luke, Rutherfurd-Markwick, Kay, Page, Rachel, Wong, Marie, Jirangrat, Wannita, Teh, Koon Hoong, Ali, Ajmol·2019·Nutrients

Abstract

Nitrate-rich beetroot juice supplementation has been shown to improve cardiovascular and cognitive function in younger and older adults via increased nitric oxide production. However, it is unclear whether the level of effects differs between the two groups. We hypothesized that acute supplementation with nitrate-rich beetroot juice would improve cardiovascular and cognitive function in older and younger adults, with the potential for greater improvements in older adults. Thirteen younger (18–30 years) and 11 older (50–70 years) adults consumed either 150 mL of nitrate-rich beetroot juice (BR; 10.5 mmol nitrate) or placebo (PL; 1 mmol nitrate) in a double-blind, crossover design, 2.25 h prior to a 30-min treadmill walk. Plasma nitrate and nitrite concentrations, blood pressure (BP), heart rate (HR), cognitive function, mood and perceptual tests were performed throughout the trial. BR consumption significantly increased plasma nitrate (p < 0.001) and nitrite (p = 0.003) concentrations and reduced systolic BP (p < 0.001) in both age groups and reduced diastolic BP (p = 0.013) in older adults. Older adults showed a greater elevation in plasma nitrite (p = 0.038) and a greater reduction in diastolic BP (p = 0.005) following BR consumption than younger adults. Reaction time was improved in the Stroop test following BR supplementation for both groups (p = 0.045). Acute BR supplementation increased plasma nitrite concentrations and reduced diastolic BP to a greater degree in older adults; whilst systolic BP was reduced in both older and younger adults, suggesting nitrate-rich BR may improve cardiovascular health, particularly in older adults due to the greater benefits from reductions in diastolic BP.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.3390/nu11071683

Cites

31 of 31 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Interventions involving beetroot reduce blood pressure in various populations, including pregnant women with hypertension, adults with elevated blood pressure and older individuals.

    “Interventions involving beetroot have been shown to reduce blood pressure in various populations, including pregnant women with hypertension, adults with elevated blood pressure and older individuals [19,20,21].”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Stanaway, L., Rutherfurd-Markwick, K., Page, R., Wong, M., Jirangrat, W., Teh, K. H., & Ali, A.
Affiliations
  • Massey University (NZ)
  • Thai Union Group PCL, Bangkok 10400, Thailand
Corresponding author
Ali, Ajmol
Venue
Nutrients
Publisher
MDPI AG
Published
2019-07-22
Volume
11
Issue
7
Pages
1683
ISSN
2072-6643 (ISSN-L)
OpenAlex
W2963687295
Cited by
67
References
31
Citations by year
2026: 10 · 2025: 9 · 2024: 6 · 2023: 12 · 2022: 11 · 2021: 10 · 2020: 7 · 2019: 1 · 2017: 1
FWCI
4.97
Type
journal article
Language
en
Open access
Locations
  • Nutrients (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Disease Prevention
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
Keywords
acute supplementation, plasma nitrite, plasma nitrate, blood pressure, diastolic blood pressure, systolic blood pressure, heart rate, cognitive function, Stroop task, reaction time, older adults, age differences, nitric oxide, cardiovascular health, mood
MeSH terms
Fruit and Vegetable Juices, Adolescent, Adult, Blood Pressure, Double-Blind Method, Heart Rate, Humans, Nitrates, Nitrites, Plant Roots, Cross-Over Studies, Dietary Supplements, Beta vulgaris, Young Adult

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review