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Effect of β-hydroxy-β-methylbutyrate (HMB) on lean body mass during 10 days of bed rest in older adults
Abstract
Background Loss of muscle mass due to prolonged bed rest decreases functional capacity and increases hospital morbidity and mortality in older adults. Objective To determine if HMB, a leucine metabolite, is capable of attenuating muscle decline in healthy older adults during complete bed rest. Design A randomized, controlled, double-blinded, parallel-group design study was carried out in 24 healthy (SPPB ≥ 9) older adult subjects (20 women, 4 men), confined to complete bed rest for ten days, followed by resistance training rehabilitation for eight weeks. Subjects in the experimental group were treated with HMB (calcium salt, 1.5 g twice daily - total 3 g/day). Control subjects were treated with an inactive placebo powder. Treatments were provided starting 5 days prior to bed rest till the end rehabilitation phase. DXA was used to measure body composition. Results Nineteen eligible older adults (BMI: 21-33; age: 60-76 year) were evaluable at the end of the bed rest period (Control n = 8; Ca-HMB n = 11). Bed rest caused a significant decrease in total lean body mass (LBM) (2.05 ± 0.66 kg; p = 0.02, paired t-test) in the Control group. With the exclusion of one subject, treatment with HMB prevented the decline in LBM over bed rest -0.17 ± 0.19 kg; p = 0.23, paired t-test). There was a statistically significant difference between treatment groups for change in LBM over bed rest (p = 0.02, ANOVA). Sub-analysis on female subjects (Control = 7, HMB = 8) also revealed a significant difference in change in LBM over bed rest between treatment groups (p = 0.04, ANOVA). However, differences in function parameters could not be observed, probably due to the sample size of the study. Conclusions In healthy older adults, HMB supplementation preserves muscle mass during 10 days of bed rest. These results need to be confirmed in a larger trial.
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“Although the number of b-HMB studies in older people remains limited, results of a recent study demonstrated that b-HMB supplementation preserved muscle mass during 10 days of bed rest in healthy older adults (age range 60 to 75 years).204”
From Evidence-Based Recommendations for Optimal Dietary Protein Intake in Older People: A Position Paper From the PROT-AGE Study Group (2013) · cites this paper as [204]
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BackgroundMethodInfluential
Metadata
- Authors
- Deutz, N. E. P., Pereira, S. L., Hays, N. P., Oliver, J. S., Edens, N. K., Evans, C. M., & Wolfe, R. R.
- Affiliations
- University of Arkansas for Medical Sciences (US)
- Abbott Nutrition (United States) (US)
- Corresponding author
- Deutz, Nicolaas E.P.
- Venue
- Clinical Nutrition
- Publisher
- Elsevier BV
- Published
- 2013-10
- Volume
- 32
- Issue
- 5
- Pages
- 704-712
- ISSN
- 0261-5614 (ISSN-L)
- OpenAlex
- W2129894754
- Cited by
- 287
- References
- 43
- Citations by year
- 2026: 18 · 2025: 19 · 2024: 21 · 2023: 17 · 2022: 19 · 2021: 26 · 2020: 36 · 2019: 19 · 2018: 30 · 2017: 21 · 2016: 21 · 2015: 18 · 2014: 14 · 2013: 7
- FWCI
- 11.61
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Clinical Nutrition (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Nursing › Nutrition and Dietetics › Muscle metabolism and nutrition
- Health Sciences › Medicine › Physiology (medical) › Nutrition and Health in Aging
- Health Sciences › Medicine › Physiology (medical) › Spaceflight effects on biology
- Keywords
- beta-hydroxy-beta-methylbutyrate, HMB supplementation, lean body mass, muscle mass loss, bed rest, disuse atrophy, older adults, leucine metabolites, body composition, sarcopenia prevention
- MeSH terms
- Aged, Aging, Bed Rest, Body Composition, Double-Blind Method, Female, Humans, Male, Middle Aged, Muscle Proteins, Musculoskeletal Physiological Phenomena, Valerates, Absorptiometry, Photon, Muscle, Skeletal, Dietary Supplements, Muscle Development, Whole Body Imaging, Muscle Strength, Resistance Training, Sarcopenia
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