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Exercise, Fasting, Ketones
As incidence rates of chronic illnesses continue to increase, many pharmacological and lifestyle interventions have been undertaken to pinpoint effective treatment and prevention tools to combat them. One such intervention of recent interest includes the use of fasting. Ketones, a product of fat breakdown, are thought to be a key player in some of the health benefits achieved through fasting. Despite potential benefits, adhering to a fasting regimen can be difficult. While it is generally well-tolerated, some experience negative side effects,² indicating potential issues with long-term adherence. Heilbronn et al. suggest that a small meal on fasting days may be a more sustainable option.³ However, little research has been conducted examining the effect of consuming small amounts of food during a fast. Intake of food typically causes body cells to switch back to primarily utilizing glucose for energy rather than ketones,⁴ but there is some evidence that exercise may allow a similar metabolic state to be maintained even with the ingestion of some food.⁵ The main purpose of this study was to evaluate how the presence of a snack and/or exercise during a 30 hr fast impacted ketone levels.
BYU ScholarsArchive Citation
Hales, Katelynn; Chan, Hil'ilei; Deru, Landon S.; Moss, Jake; and Bailey, Bruce W. Ph.D., "The Metabolic Effects of Exercise and a Pre-exercise Snack during a 30-hour Fast" (2022). Library/Life Sciences Undergraduate Poster Competition 2022. 23.
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