Quercetin's Influence on Exercise Performance and Muscle Mitochondrial Biogenesis
Open accessAbstract
PURPOSE: To determine the influence of 2 wk of quercetin (Q; 1000 mg x d(-1)) compared with placebo (P) supplementation on exercise performance and skeletal muscle mitochondrial biogenesis in untrained, young adult males (N = 26, age = 20.2 +/- 0.4 yr, VO2max = 46.3 +/- 1.2 mL x kg(-1) x min(-1)). METHODS: Using a randomized, crossover design with a 2-wk washout period, subjects provided blood and muscle biopsy samples presupplementation and postsupplementation periods and were given 12-min time trials on 15% graded treadmills after 60 min of moderate exercise preloads at 60% VO2max. RESULTS: Plasma Q levels rose significantly in Q versus P during the 2-wk supplementation period (interaction P value <0.001). During the 12-min trial, the net change in distance achieved was significantly greater during Q (2.9%) compared with P (-1.2%; 29.5 +/- 11.5 vs -11.9 +/- 16.0 m, respectively, P = 0.038). Skeletal muscle messenger RNA expression tended to increase (range = 16-25%) during Q versus P for sirtuin 1 (interaction effect, P = 0.152), peroxisome proliferator-activated receptor gamma coactivator-1alpha (P = 0.192), cytochrome c oxidase (P = 0.081), and citrate synthase (P = 0.166). Muscle mitochondrial DNA (relative copy number per diploid nuclear genome) increased 140 +/- 154 (4.1%) with Q compared with -225 +/- 157 (6.0% decrease) with P (P = 0.098). CONCLUSIONS: In summary, 1000 mg x d(-1) Q versus P for 2 wk by untrained males was associated with a small but significant improvement in 12-min treadmill time trial performance and modest but insignificant increases in the relative copy number of mitochondrial DNA and messenger RNA levels of four genes related to mitochondrial biogenesis.
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.
Integrity signals
Registry
Cites
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.
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?
Quercetin supplementation (1 g for 2 weeks) improved treadmill performance and markers of mitochondrial biogenesis in untrained adult males.
“Nieman et al. [614] supplemented untrained adult males with 1 g of quercetin in a double-blind fashion for 2 weeks and reported that treadmill performance and markers of mitochondrial biogenesis were improved.”
From ISSN exercise & sports nutrition review update: research & recommendations (2018) · cites this paper as [614]
The Research design section confirms a double-blinded trial, and the Results report significantly improved treadmill performance after 1 g/day of quercetin for two weeks in untrained young adult males. The Results and Discussion describe increases in mitochondrial-biogenesis markers only as nonsignificant trends, so saying the markers “were improved” overstates that finding. Our copy provides no page numbers for these passages. (LLM, conf=0.90)
Experimental — accuracy not yet measured
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
The citation lists haven’t been fetched yet
References 41 · Cited by 194
- Authors
- NIEMAN, D. C., WILLIAMS, A. S., SHANELY, R. A., JIN, F., MCANULTY, S. R., TRIPLETT, N. T., AUSTIN, M. D., & HENSON, D. A.
- Affiliations
- Appalachian State University (US)
- Venue
- Medicine & Science in Sports & Exercise
- Published
- 2010-02
- Volume
- 42
- Issue
- 2
- Pages
- 338-345
- ISSN
- 0195-9131 (ISSN-L)
- OpenAlex
- W2143824660
- Cited by
- 194
- References
- 41
- Citations by year
- 2026: 2 · 2025: 7 · 2024: 9 · 2023: 12 · 2022: 7 · 2021: 18 · 2020: 17 · 2019: 11 · 2018: 11 · 2017: 7 · 2016: 11 · 2015: 13 · 2014: 17 · 2013: 14 · 2012: 16
- FWCI
- 16.97
- Type
- journal article
- Language
- en
- Open access
- green
- libres.uncg.edu
- Locations
- Medicine & Science in Sports & Exercise (publishedVersion)
- PubMed (publishedVersion)
- NC Digital Online Collection of Knowledge and Scholarship (The University of North Carolina at Greensboro) (submittedVersion)
- Topics
- Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
- Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
- Keywords
- quercetin, exercise performance, mitochondrial DNA copy number, SIRT1, PPARγ coactivator-1α, cytochrome c oxidase, citrate synthase, dietary supplementation, untrained young men, time trial performance
- MeSH terms
- Antioxidants, Double-Blind Method, Exercise Test, Humans, Male, Mitochondria, Quercetin, RNA, Messenger, Muscle, Skeletal, Cross-Over Studies, Dietary Supplements, Athletic Performance, 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