Cited by 86Coffee research and impactsThermoregulation and physiological responsesCardiovascular and exercise physiology

Caffeine reduces myocardial blood flow during exercise

Higgins, John P., Babu, Kavita M.·2013·The American Journal of Medicine

Abstract

Caffeine consumption has been receiving increased interest from both the medical and lay press, especially given the increased amounts now available in energy products. Acute ingestion of caffeine usually increases cardiac work; however, caffeine impairs the expected proportional increase in myocardial blood flow to match this increased work of the heart, most notably during exercise. This appears to be mainly due to caffeine's effect on blocking adenosine-induced vasodilatation in the coronary arteries in normal healthy subjects. This review summarizes the available medical literature specifically relating to pure caffeine tablet ingestion and reduced exercise coronary blood flow, and suggests possible mechanisms. Further studies are needed to evaluate this effect for other common caffeine-delivery systems, including coffee, energy beverages, and energy gels, which are often used for exercise performance enhancement, especially in teenagers and young athletes.

Integrity signals

Registry

Crossref · 10.1016/j.amjmed.2012.12.023

Cites

49 of 49 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

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?

  • Indirect laboratory measures indicate that caffeine consumed immediately before exercising substantially reduces myocardial blood flow in healthy individuals.

    “Indirect laboratory measures indicate that caffeine consumed immediately before exercising substantially reduces myocardial blood flow in healthy individuals (114).”

    From The Safety of Ingested Caffeine: A Comprehensive Review (2017) · cites this paper as [114]

Cites

Flagged first, then by citations

1 of the 50 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Higgins, J. P., & Babu, K. M.
Affiliations
  • Memorial Hermann (US)
  • UMass Memorial Medical Center (US)
Corresponding author
Higgins, John P.
Venue
The American Journal of Medicine
Publisher
Elsevier BV
Published
2013-08
Volume
126
Issue
8
Pages
730.e1-730.e8
ISSN
0002-9343 (ISSN-L)
OpenAlex
W2043403655
Cited by
85
References
50
Citations by year
2026: 3 · 2025: 2 · 2024: 4 · 2023: 5 · 2022: 4 · 2021: 11 · 2020: 6 · 2019: 7 · 2018: 4 · 2017: 12 · 2016: 6 · 2015: 7 · 2014: 9 · 2013: 3
FWCI
1.04
Type
journal article
Language
en
Open access
closed
Locations
  • The American Journal of Medicine (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Pharmacology › Coffee research and impacts
  • Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
Keywords
caffeine, myocardial blood flow, physical activity, coronary blood flow, adenosine, coronary vasodilation, energy gels, cardiac work, exercise performance enhancement, youth athletes
MeSH terms
Caffeine, Coronary Vessels, Heart, Hemodynamics, Humans, Phosphodiesterase Inhibitors, Exercise

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