Cited by 69Chronic Obstructive Pulmonary Disease (COPD) ResearchCardiovascular and exercise physiologyNitric Oxide and Endothelin Effects

Dietary nitrate supplementation in COPD: An acute, double-blind, randomized, placebo-controlled, crossover trial

Kerley, Conor P., Cahill, Kathleen, Bolger, Kenneth, McGowan, Aisling, Burke, Conor, Faul, John, Cormican, Liam·2015·Nitric Oxide

Abstract

Background The acute consumption of dietary nitrate has been shown to improve exercise capacity in athletes, healthy adults and subjects with peripheral vascular disease. Many COPD patients have reduced exercise capacity. We hypothesized that acute nitrate consumption might increase incremental shuttle walk test (ISWT) distance in COPD subjects.Methods Eleven COPD subjects were randomly assigned to consume either a high nitrate or a matched, low nitrate beverage in a double-blind, randomized, placebo-controlled, crossover design. ISWT distance was measured both before and 3 h after the beverage and change was recorded. After a 7-day washout, ISWT distances were re-measured before and 3 h after the alternate beverage and changes were recorded.Results We observed an increase in ISWT distance after consuming the high nitrate juice (25 m) compared with a reduction after the low nitrate juice (14 m) (p < 0.01). This improvement in exercise capacity was associated with significant increases in serum nitrate (p < 0.000005) and nitrite (p < 0.01) levels and a significant lowering of resting blood pressure (<0.05).Conclusions In patients with stable COPD, the acute consumption of dietary nitrate increased serum nitrate/nitrite levels and exercise capacity and was associated with a decrease in resting blood pressure. Nitrate consumption might alter exercise capacity in COPD patients.

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Crossref · 10.1016/j.niox.2014.12.010

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  • Recent human studies demonstrated that dietary nitrate (beetroot juice containing approximately 200-400 mg of nitrate) improved exercise performance and reduced blood pressure in COPD patients.

    “Recent human studies have demonstrated that dietary nitrate (beetroot juice containing approximately 200–400 mg of nitrate) improved the exercise performance and reduced blood pressure in COPD patients [130,131].”

    From NO-Rich Diet for Lifestyle-Related Diseases (2015) · cites this paper as [131]

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Authors
Kerley, C. P., Cahill, K., Bolger, K., McGowan, A., Burke, C., Faul, J., & Cormican, L.
Affiliations
  • University College Dublin (IE)
  • Connolly Hospital Blanchardstown (IE)
Corresponding author
Kerley, Conor P.
Venue
Nitric Oxide
Publisher
Elsevier BV
Published
2015-01
Volume
44
Pages
105-111
ISSN
1089-8603 (ISSN-L)
OpenAlex
W2032897320
Cited by
69
References
42
Citations by year
2026: 1 · 2025: 3 · 2024: 3 · 2023: 2 · 2022: 5 · 2021: 5 · 2020: 4 · 2019: 6 · 2018: 7 · 2017: 15 · 2016: 9 · 2015: 9
FWCI
8.83
Type
journal article
Language
en
Open access
closed
Locations
  • Nitric Oxide (publishedVersion)
  • PubMed (publishedVersion)
  • Lenus, The Irish Health Repository (Dr Steevens Hospital Library) (submittedVersion)
Funders
  • Irish Thoracic Society
  • Asthma Society of Ireland
  • Irish Lung Foundation
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Chronic Obstructive Pulmonary Disease (COPD) Research
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
Keywords
dietary nitrate, chronic obstructive pulmonary disease, exercise capacity, incremental shuttle walk test, serum nitrate, serum nitrite, resting blood pressure
MeSH terms
Aged, Aged, 80 and over, Blood Pressure, Double-Blind Method, Exercise Test, Female, Hemodynamics, Humans, Male, Middle Aged, Nitrates, Nitric Oxide, Nitrites, Walking, Cross-Over Studies, Pulmonary Disease, Chronic Obstructive

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