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Acute High-Intensity Exercise Impairs Skeletal Muscle Respiratory Capacity, Gwenael Layec, Gregory M. Blain, Matthew J. Rossman, Song-Young Park, Corey R. Hart, Joel D. Trinity, Jayson R. Gifford, Simranjit K. Sidhu, Joshua C. Weavil, Thomas J. Hureau, Markus Amann, Russell S. Richardson
Acute High-Intensity Exercise Impairs Skeletal Muscle Respiratory Capacity, Gwenael Layec, Gregory M. Blain, Matthew J. Rossman, Song-Young Park, Corey R. Hart, Joel D. Trinity, Jayson R. Gifford, Simranjit K. Sidhu, Joshua C. Weavil, Thomas J. Hureau, Markus Amann, Russell S. Richardson
Health and Kinesiology Faculty Publications
Purpose
The effect of an acute bout of exercise, especially high-intensity exercise, on the function of mitochondrial respiratory complexes is not well understood, with potential implications for both the healthy population and patients undergoing exercise-based rehabilitation. Therefore, this study sought to comprehensively examine respiratory flux through the different complexes of the electron transport chain in skeletal muscle mitochondria before and immediately after high-intensity aerobic exercise.
Methods
Muscle biopsies of the vastus lateralis were obtained at baseline and immediately after a 5-km time trial performed on a cycle ergometer. Mitochondrial respiratory flux through the complexes of the electron transport chain was …