ArticleJournal of orthopaedic surgery and research2025
The effects of different exercise training protocols on mitochondrial dynamics in skeletal and cardiac muscles of Wistar rats.
Article in Journal of orthopaedic surgery and research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed.
- Binaphthoquinone attenuates myofibroblast transition of human ventricular cardiac fibroblastsThe Korean journal of physiology & pharmacology : official journal of the Korean Physiological Society and the Korean Society of Pharmacology · 2026Article
- Exercise volume modulates cardiac protection in a type 2 diabetic rat model: differential effects of high- and low-volume moderate-intensity endurance exercise training on diabetic cardiomyopathy.Cardiovascular diabetology. Endocrinology reports · 2026Article
- Mitochondria: the central hub linking exercise to enhanced cardiac function.Frontiers in physiology · 2026Review
- Potential Mechanisms of Exercise-Mediated Ferroptosis Regulation in Central Nervous System Diseases.Molecular neurobiology · 2025Review
- Adaptations in Mitochondrial Function Induced by Exercise: A Therapeutic Route for Treatment-Resistant Depression.International journal of molecular sciences · 2025Review
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Abstract
backgroundMitochondrial fission and fusion both contribute to maintaining mitochondrial function and optimizing bioenergetic capacity.
objectiveThe aim of this study was to compare the effect of aerobic and resistance training on mitochondrial fission and fusion markers in skeletal and cardiac muscles of Wistar rats.
method24 male Wistar rats were randomly divided into four groups of moderate-intensity interval training (MIIT), high-intensity interval training (HIIT), resistance training (RT) and control (CON). The MIIT and HIIT groups performed treadmill exercises with an intensity of 60-65% and 80-85% of the maximum speed, respectively, while the RT group performed resistance training with an intensity of 30-60% of the rat's body weight for 8 weeks. The soleus (SOL), extensor digitorum longus (EDL) and left ventricular tissues were used to evaluate markers of mitochondrial fission and fusion PGC-1α (fusion/fission), Opa-1 (fusion), Fis-1 (fission), Drp-1 (fission), Mfn-1 and Mfn-2 (fusion) genes expression.
resultsIn all three tissues, a significant increase in some mitochondrial fusion markers was observed after 8 weeks of training (p = < 0.0001-0.0452). Furthermore, a significant decrease in cardiac mitochondrial fission markers was observed in all three groups (p = < 0.0001-0.0156). This reduction in some markers was evident in the SOL tissue of the HIIT group (p < 0.0001 for Drp-1 and p = 0.0007 for Fis-1) and in the EDL tissue of the RT group (p = 0.0005 for Fis-1 and p = 0.0012 for Drp-1). The mitochondrial fission/fusion markers in the heart (p = 0.0007-0.0449) and SOL (p = 0.0050-0.0258) tissues of the HIIT group had more changes than the RT group, while the mitochondrial fission markers in the EDL tissue of the RT group had a lower level than the HIIT (p = 0.0087 for Drp-1) and MIIT (p = 0.0130 for Fis-1 and p = 0.0010 for Drp-1) groups.
conclusionOur study demonstrated that HIIT, through better regulation of mitochondrial fusion and fission than RT, improves mitochondrial dynamics in cardiac and SOL tissues.
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