Cited by 39Dietary Effects on HealthMuscle metabolism and nutritionMuscle Physiology and Disorders

Effects of Intermittent Fasting or Calorie Restriction on Markers of Lipid Metabolism in Human Skeletal Muscle

Liu, Bo, Hutchison, Amy T, Thompson, Campbell H, Lange, Kylie, Wittert, Gary A, Heilbronn, Leonie K·2021·The Journal of Clinical Endocrinology & Metabolism

Abstract

Context: Impaired lipid metabolism is linked with obesity-associated insulin resistance, which may be reversed by caloric restriction (CR). Objective: In a secondary analysis of a randomized controlled trial, we compared the effects of intermittent fasting (IF) and CR on markers of lipid metabolism in muscle. Design: Seventy-six women (body mass index, 25-40 kg/m2) were randomly assigned to 1 of 3 diets for 8 weeks and provided foods at 70% (CR70 and IF70) or 100% (IF100) of energy requirements. IF groups ate breakfast prior to a 24-hour fast on 3 nonconsecutive days per week. On nonfasting days, IF70 ate at 100% and IF100 ate at 145% of energy requirements to achieve the prescribed target. Weight, body composition, insulin sensitivity by clamp, nonesterified fatty acids (NEFAs), β-hydroxybutyrate (BHB), and markers of lipid metabolism and oxidative stress in muscle by quantitative polymerase chain reaction were measured at baseline and week 8 following a 12-hour overnight fast (all groups) and 24-hour fast (IF groups). Results: IF70 resulted in greater weight and fat loss and reduced NEFAs vs CR70 and IF100 after an overnight fast. IF70 and IF100 induced a greater reduction only in mRNA levels of antioxidant enzymes glutathione peroxidase 1 (GPX1), superoxide dismutase 1, soluble (SOD1), and SOD2 vs CR70. Fasting for 24 hours increased NEFAs and BHB in IF groups, but impaired insulin sensitivity and increased PLIN5 mRNA levels. Conclusions: In comparison to CR, IF did not increase markers of lipid metabolism in muscle, but reduced expression of antioxidant enzymes. However, fasting-induced insulin resistance was detected, alongside increased PLIN5 expression, potentially reflecting transient lipid storage.

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Crossref · 10.1210/clinem/dgaa707

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  • Caloric restriction can have a significant impact on weight loss and reduction of intramuscular fat accumulation through whole-body lipid oxidation.

    “Regarding energy status, caloric restriction can have a significant impact on weight loss and reduction of intramuscular fat accumulation through whole-body lipid oxidation [77].”
  • In a study by Sparks et al., only subjects with baseline "more coupled" mitochondria benefited from caloric restriction, with improvements in muscle mitochondrial ATP synthesis rates and coupling.

    “In a study by Sparks et al., only those subjects with a baseline of “more coupled” mitochondria benefited from caloric restriction, with improvements in muscle mitochondrial ATP synthesis rates and coupling [77].”

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Authors
Liu, B., Hutchison, A. T., Thompson, C. H., Lange, K., Wittert, G. A., & Heilbronn, L. K.
Affiliations
  • South Australian Health and Medical Research Institute (AU)
  • The University of Adelaide (AU)
Corresponding author
Heilbronn, Leonie K
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
2020-10-08
Volume
106
Issue
3
Pages
e1389-e1399
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W3092111908
Cited by
39
References
47
Citations by year
2026: 5 · 2025: 8 · 2024: 9 · 2023: 4 · 2022: 12 · 2021: 1
FWCI
2.56
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
Funders
  • National Health and Medical Research Council (APP1023401)
  • Australian Research Council (FT120100027)
Topics
  • Health Sciences › Medicine › Physiology › Dietary Effects on Health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
Keywords
intermittent fasting, caloric restriction, skeletal muscle lipid metabolism, free fatty acids, beta-hydroxybutyrate, insulin resistance, oxidative stress, antioxidant enzymes, glutathione peroxidase 1, superoxide dismutase, perilipin 5, fat deposition, obesity, weight loss, fat loss
MeSH terms
Adult, Aged, Fasting, Female, Follow-Up Studies, Humans, Middle Aged, Mitochondria, Muscle, Obesity, Oxidation-Reduction, Biomarkers, Weight Loss, Muscle, Skeletal, Caloric Restriction, Overweight, Lipid Metabolism

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