Ketone bodies and exercise performance: The next magic bullet or merely hype?
Open accessAbstract
Elite athletes and coaches are in a constant search for training methods and nutritional strategies to support training and recovery efforts that may ultimately maximize athletes' performance. Recently, there has been a re-emerging interest in the role of ketone bodies in exercise metabolism, with considerable media speculation about ketone body supplements being routinely used by professional cyclists. Ketone bodies can serve as an important energy substrate under certain conditions, such as starvation, and can modulate carbohydrate and lipid metabolism. Dietary strategies to increase endogenous ketone body availability (i.e., a ketogenic diet) require a diet high in lipids and low in carbohydrates for ~4 days to induce nutritional ketosis. However, a high fat, low carbohydrate ketogenic diet may impair exercise performance via reducing the capacity to utilize carbohydrate, which forms a key fuel source for skeletal muscle during intense endurance-type exercise. Recently, ketone body supplements (ketone salts and esters) have emerged and may be used to rapidly increase ketone body availability, without the need to first adapt to a ketogenic diet. However, the extent to which ketone bodies regulate skeletal muscle bioenergetics and substrate metabolism during prolonged endurance-type exercise of varying intensity and duration remains unknown. Therefore, at present there are no data available to suggest that ingestion of ketone bodies during exercise improves athletes' performance under conditions where evidence-based nutritional strategies are applied appropriately.
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Ketone bodies are normally found in circulation in relatively small quantities ranging between 0.1 to 0.5 mmol/L.
“Ketone bodies are lipid-derived low molecular weight hydrophilic molecules, and are normally found in circulation in relatively small quantities ranging between 0.1 to 0.5 mmol/L [190].”
From Regulation of Energy Substrate Metabolism in Endurance Exercise (2021) · cites this paper as [190]
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- Authors
- Pinckaers, P. J. M., Churchward-Venne, T. A., Bailey, D., & van Loon, L. J. C.
- Affiliations
- Maastricht University Medical Centre (NL)
- Venue
- Sports Medicine
- Published
- 2016-07-18
- Volume
- 47
- Issue
- 3
- Pages
- 383-391
- ISSN
- 0112-1642 (ISSN-L)
- 1179-2035
- PMC
- PMC5309297
- OpenAlex
- W2476262144
- Cited by
- 113
- References
- 88
- Citations by year
- 2026: 4 · 2025: 8 · 2024: 9 · 2023: 10 · 2022: 9 · 2021: 14 · 2020: 22 · 2019: 14 · 2018: 15 · 2017: 6 · 2016: 2
- FWCI
- 9.92
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Locations
- Sports Medicine (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Research Publications (Maastricht University) (publishedVersion, cc-by)
- Research Bank (Australian Catholic University) (submittedVersion)
- Research Publications (Maastricht University) (submittedVersion, other-oa)
- Topics
- Health Sciences › Medicine › Physiology › Diet and metabolism studies
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
- Keywords
- ketone bodies, exercise performance, ketogenic diet, nutritional ketosis, ketone salts, ketone esters, carbohydrate metabolism, lipid metabolism, endurance exercise, skeletal muscle bioenergetics, professional cyclists, sports nutrition
- MeSH terms
- Dietary Carbohydrates, Energy Metabolism, Humans, Ketone Bodies, Physical Endurance, Exercise, Muscle, Skeletal, Dietary Supplements, Athletic Performance, Athletes
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 ›
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