Effects of exercise-induced metabolic and mechanical loading on skeletal muscle mitochondrial function in male rats

Author:

Touron Julianne1ORCID,Perrault Hélène2,Maisonnave Laura1,Patrac Véronique1,Walrand Stéphane1,Malpuech-Brugere Corinne1,Pereira Bruno3,Burelle Yan4,Costes Frédéric15,Richard Ruddy135ORCID

Affiliation:

1. UCA-INRAE UMR 1019, Human Nutrition Unit, ASMS Team, University of Clermont Auvergne, Clermont-Ferrand, France

2. Respiratory Division, McGill University Health Center, Montreal, Quebec, Canada

3. Delegation to Clinical Research and Innovation, University Hospital of Clermont-Ferrand, Clermont-Ferrand, France

4. Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada

5. Department of Sports Medicine and Functional Explorations, University Hospital of Clermont-Ferrand, Clermont-Ferrand, France

Abstract

Anticipating outcomes of eccentric versus concentric training is confounded by differences in mechanical efficiency. Our observations in groups of rats submitted to uphill and downhill running regimens inducing similar levels of metabolic demands or same external power outputs reaffirm that independent of modality, oxygen requirements and not external work governs skeletal muscle mitochondrial function adaptations.

Publisher

American Physiological Society

Subject

Physiology (medical),Physiology

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