Cited by 288Mitochondrial Function and PathologyCardiovascular and exercise physiologyExercise and Physiological Responses

Resistance exercise training alters mitochondrial function in human skeletal muscle

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PORTER, CRAIG, REIDY, PAUL T., BHATTARAI, NISHA, SIDOSSIS, LABROS S., RASMUSSEN, BLAKE B.·2015·Medicine & Science in Sports & Exercise

Abstract

INTRODUCTION: Loss of mitochondrial competency is associated with several chronic illnesses. Therefore, strategies that maintain or increase mitochondrial function will likely be of benefit in numerous clinical settings. Endurance exercise has long been known to increase mitochondrial function in the skeletal muscle. Comparatively little is known regarding the effect of resistance exercise training (RET) on skeletal muscle mitochondrial respiratory function. PURPOSE: The purpose of the current study was to determine the effect of chronic resistance training on skeletal muscle mitochondrial respiratory capacity and function. METHODS: Here, we studied the effect of a 12-wk RET program on skeletal muscle mitochondrial function in 11 young healthy men. Muscle biopsies were collected before and after the 12-wk training program, and mitochondrial respiratory capacity was determined in permeabilized myofibers by high-resolution respirometry. RESULTS: RET increased lean body mass and quadriceps muscle strength by 4% and 15%, respectively (P < 0.001). Coupled mitochondrial respiration supported by complex I, and complex I and II substrates increased by 2- and 1.4-fold, respectively (P < 0.01). The ratio of coupled complex I-supported respiration to maximal respiration increased with RET (P < 0.05), as did complex I protein abundance (P < 0.05), whereas the substrate control ratio for succinate was reduced after RET (P < 0.001). Transcripts responsible for proteins critical to electron transfer and NAD production increased with training (P < 0.05), whereas transcripts involved in mitochondrial biogenesis were unaltered. CONCLUSIONS: Collectively, 12 wk of RET resulted in qualitative and quantitative changes in skeletal muscle mitochondrial respiration. This adaptation was accompanied by modest changes in mitochondrial proteins and transcript expression. RET seems to be a means to augment the respiratory capacity and intrinsic function of skeletal muscle mitochondria.

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  • Resistance training helps mitigate these effects by maintaining muscle mass and preserving metabolic capacity, including mitochondrial function and glucose utilization.

    “Resistance training helps mitigate these effects by maintaining muscle mass and preserving metabolic capacity, including mitochondrial function and glucose utilization.”

    From Weight maintenance after discontinuation of GLP-1 therapies (2026) · cites this paper as [77]

    The Results report increased lean body mass and mitochondrial respiration after 12 weeks of resistance training, supporting the muscle-mass and mitochondrial-function parts of the claim. The paper does not report glucose utilization, so that part is unsupported. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • PRT increases mitochondrial protein fractional synthesis rates and improves mitochondrial function.

    “strong evidence shows that PRT increases mitochondrial protein fractional synthesis rates [119,371] and improves mitochondrial function [119,372].”
  • Strong evidence shows that PRT increases mitochondrial protein fractional synthesis rates and improves mitochondrial function.

    “More recently, strong evidence shows that PRT increases mitochondrial protein fractional synthesis rates [119,371] and improves mitochondrial function [119,372].”
  • Endurance and resistance exercise have both been linked to increased mitochondrial biogenesis.

    “Both endurance and resistance exercise have been associated with elevated mitochondrial biogenesis (93, 109).”

    From Mitochondria initiate and regulate sarcopenia (2017) · cites this paper as [109]

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Authors
PORTER, C., REIDY, P. T., BHATTARAI, N., SIDOSSIS, L. S., & RASMUSSEN, B. B.
Affiliations
  • Shriners Hospitals for Children - Galveston (US)
  • The University of Texas Medical Branch at Galveston (US)
Venue
Medicine & Science in Sports & Exercise
Published
2015-09
Volume
47
Issue
9
Pages
1922-1931
ISSN
0195-9131 (ISSN-L)
OpenAlex
W2018607292
Cited by
288
References
40
Citations by year
2026: 26 · 2025: 41 · 2024: 36 · 2023: 37 · 2022: 28 · 2021: 28 · 2020: 25 · 2019: 22 · 2018: 23 · 2017: 9 · 2016: 6 · 2015: 7
FWCI
3.00
Type
journal article
Language
en
Open access
Locations
  • Medicine & Science in Sports & Exercise (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (UL1TR000071)
  • National Institute on Aging (P30AG024832)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR049877)
  • NIH Clinical Center
  • National Center for Advancing Translational Sciences
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
Keywords
resistance training, skeletal muscle mitochondria, mitochondrial respiration, complex I, succinic acid, mitochondrial biogenesis, electron transfer, muscle strength, lean body mass, exercise adaptation
MeSH terms
Adult, Humans, Male, Mitochondria, Muscle, Physical Education and Training, RNA, Messenger, Body Mass Index, Muscle, Skeletal, Cell Respiration, Electron Transport Chain Complex Proteins, Muscle Strength, Resistance Training, Young Adult

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