Cited by 66Mitochondrial Function and PathologyMuscle Physiology and DisordersCardiovascular and exercise physiology

Acute and chronic effects of resistance training on skeletal muscle markers of mitochondrial remodeling in older adults

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Mesquita, Paulo H.C., Lamb, Donald A., Parry, Hailey A., Moore, Johnathon H., Smith, Morgan A., Vann, Christopher G., Osburn, Shelby C., Fox, Carlton D. +6 more·2020·Physiological Reports

Abstract

We investigated the acute and chronic effects of resistance training (RT) on skeletal muscle markers of mitochondrial content and remodeling in older, untrained adults. Sixteen participants (n = 6 males, n = 10 females; age = 59 ± 4 years) completed 10 weeks of full-body RT (2 day/week). Muscle biopsies from the vastus lateralis were obtained prior to RT (Pre), 24 hr following the first training session (Acute), and 72 hr following the last training session (Chronic). Protein levels of mitochondrial electron transport chain complexes I-V (+39 to +180%, p ≤ .020) and markers of mitochondrial fusion Mfn1 (+90%, p = .003), Mfn2 (+110%, p < .001), and Opa1 (+261%, p = .004) increased following chronic RT. Drp1 protein levels also increased (+134%, p = .038), while Fis1 protein levels did not significantly change (-5%, p = .584) following chronic RT. Interestingly, protein markers of mitochondrial biogenesis (i.e., PGC-1α, TFAM, and NRF1) or mitophagy (i.e., Pink1 and Parkin) were not significantly altered (p > .050) after 10 weeks of RT. In summary, chronic RT promoted increases in content of electron transport chain proteins (i.e., increased protein levels of all five OXPHOS complexes) and increase in the levels of proteins related to mitochondrial dynamics (i.e., increase in fusion protein markers) in skeletal muscle of older adults. These results suggest that chronic RT could be a useful strategy to increase mitochondrial protein content in older individuals.

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Authors
Mesquita, P. H. C., Lamb, D. A., Parry, H. A., Moore, J. H., Smith, M. A., Vann, C. G., Osburn, S. C., Fox, C. D., Ruple, B. A., Huggins, K. W., Fruge, A. D., Young, K. C., Kavazis, A. N., & Roberts, M. D.
Affiliations
  • Auburn University (US)
  • Department of Nutrition, Dietetics and Hospitality Management Auburn University Auburn AL USA
Corresponding author
Roberts, Michael D.
Venue
Physiological Reports
Publisher
Wiley
Published
2020-08
Volume
8
Issue
15
Pages
e14526-e14526
ISSN
2051-817X (ISSN-L)
OpenAlex
W3047221068
Cited by
66
References
64
Citations by year
2026: 13 · 2025: 8 · 2024: 14 · 2023: 13 · 2022: 11 · 2021: 5 · 2020: 2
FWCI
2.51
Type
journal article
Language
en
Open access
Locations
  • Physiological Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Peanut Institute
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
Keywords
resistance training, mitochondrial remodeling, skeletal muscle, older adults, mitochondrial fusion, mitochondrial fission, respiratory chain complexes, oxidative phosphorylation, Mfn1, mitofusin 2, OPA1, Drp1, PGC-1α, mitophagy, vastus lateralis
MeSH terms
Aged, Female, Humans, Male, Membrane Proteins, Middle Aged, Mitochondria, Muscle, Oxidative Phosphorylation, Muscle, Skeletal, GTP Phosphohydrolases, Mitochondrial Proteins, Mitochondrial Membrane Transport Proteins, Resistance Training, Mitochondrial Dynamics

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