Volume 55, Issue 1 pp. 91-100
Basic & Translational Science

Physical exercise during muscle regeneration improves recovery of the slow/oxidative phenotype

Nathalie Koulmann MD, PhD

Nathalie Koulmann MD, PhD

Institut de Recherche Biomédicale des Armées, Département Environnements Opérationnels, Bretigny-Sur-Orge, France

Ecole du Val-de-Grâce, Paris, France

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Hélène Richard-Bulteau PhD

Hélène Richard-Bulteau PhD

Institut de Recherche Biomédicale des Armées, Département Environnements Opérationnels, Bretigny-Sur-Orge, France

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Brigitte Crassous PharmD

Brigitte Crassous PharmD

Institut de Recherche Biomédicale des Armées, Département Environnements Opérationnels, Bretigny-Sur-Orge, France

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Bernard Serrurier PhD

Bernard Serrurier PhD

Institut de Recherche Biomédicale des Armées, Département Environnements Opérationnels, Bretigny-Sur-Orge, France

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Marielle Pasdeloup MSc

Marielle Pasdeloup MSc

Institut de Recherche Biomédicale des Armées, Département Environnements Opérationnels, Bretigny-Sur-Orge, France

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Xavier Bigard MD, PhD

Xavier Bigard MD, PhD

Institut de Recherche Biomédicale des Armées, Département Environnements Opérationnels, Bretigny-Sur-Orge, France

Ecole du Val-de-Grâce, Paris, France

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Sébastien Banzet MD, PhD

Corresponding Author

Sébastien Banzet MD, PhD

Ecole du Val-de-Grâce, Paris, France

Institut de Recherche Biomédicale des Armées, Département Soutien Médico-Chirurgical des Forces, 1 rue du lieutenant Raoul Batany, 92140 Clamart, France

INSERM U1197, Clamart, France

Correspondence to: S. Banzet; e-mail: [email protected]Search for more papers by this author
First published: 22 April 2016
Citations: 14

ABSTRACT

Introduction: As skeletal muscle mass recovery after extensive injury is improved by contractile activity, we explored whether concomitant exercise accelerates recovery of the contractile and metabolic phenotypes after muscle injury. Methods: After notexin-induced degeneration of a soleus muscle, Wistar rats were assigned to active (running exercise) or sedentary groups. Myosin heavy chains (MHC), metabolic enzymes, and calcineurin were studied during muscle regeneration at different time points. Results: The mature MHC profile recovered earlier in active rats (21 days after injury) than in sedentary rats (42 days). Calcineurin was higher in the active degenerated than in the sedentary degenerated muscles at day 14. Citrate synthase and total lactate dehydrogenase (LDH) activity decreased after injury and were similarly recovered in both active and sedentary groups at 14 or 42 days, respectively. H-LDH isozyme activity recovered earlier in the active rats. Conclusions: Exercise improved recovery of the slow/oxidative phenotype after soleus muscle injury. Muscle Nerve 55: 91–100, 2017

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