Skeletal muscle metabolism is a major determinant of resting energy expenditure.
Open accessAbstract
Energy expenditure varies among people, independent of body size and composition, and persons with a "low" metabolic rate seem to be at higher risk of gaining weight. To assess the importance of skeletal muscle metabolism as a determinant of metabolic rate, 24-h energy expenditure, basal metabolic rate (BMR), and sleeping metabolic rate (SMR) were measured by indirect calorimetry in 14 subjects (7 males, 7 females; 30 +/- 6 yr [mean +/- SD]; 79.1 +/- 17.3 kg; 22 +/- 7% body fat), and compared to forearm oxygen uptake. Values of energy expenditure were adjusted for individual differences in fat-free mass, fat mass, age, and sex. Adjusted BMR and SMR, expressed as deviations from predicted values, correlated with forearm resting oxygen uptake (ml O2/liter forearm) (r = 0.72, P less than 0.005 and r = 0.53, P = 0.05, respectively). These findings suggest that differences in resting muscle metabolism account for part of the variance in metabolic rate among individuals and may play a role in the pathogenesis of obesity.
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Skeletal muscle tissue accounts for up to 40% of total body mass and is an important determinant of whole-body metabolism.
“Skeletal muscle tissue accounts for up to 40% of total body mass and is an important determinant of whole-body metabolism (35).”
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- Authors
- Zurlo, F., Larson, K., Bogardus, C., & Ravussin, E.
- Affiliations
- National Institutes of Health (US)
- ORCID
- Bogardus, C
- Venue
- Journal of Clinical Investigation
- Published
- 1990-11-01
- Volume
- 86
- Issue
- 5
- Pages
- 1423-1427
- ISSN
- 0021-9738 (ISSN-L)
- PMC
- PMC296885
- OpenAlex
- W2015454275
- Cited by
- 959
- References
- 20
- Citations by year
- 2026: 29 · 2025: 43 · 2024: 68 · 2023: 64 · 2022: 58 · 2021: 57 · 2020: 65 · 2019: 53 · 2018: 43 · 2017: 43 · 2016: 31 · 2015: 33 · 2014: 34 · 2013: 32 · 2012: 21
- FWCI
- 5.66
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Clinical Investigation (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Physiology › Body Composition Measurement Techniques
- Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
- Keywords
- resting energy expenditure, skeletal muscle metabolism, basal metabolic rate, sleeping metabolic rate, obesity, fat-free mass, fat mass, indirect calorimetry
- MeSH terms
- Adult, Basal Metabolism, Energy Metabolism, Female, Humans, Male, Muscles, Oxygen Consumption
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