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Open Access item Muscle Physiology Changes Induced by Every Other Day Feeding and Endurance Exercise in Mice: Effects on Physical Performance

Authors:Rodríguez-Bies, Elisabet
Santa-Cruz Calvo, Sara
Fontán-Lozano, Ángela
Peña Amaro, José
Berral de la Rosa, Francisco J.
Carrión, Ángel Manuel
Navas, Plácido
López-Lluch, Guillermo
Keywords:Muscle Physiology Changes, Physical Performance
Issue Date:9-Nov-2010
Publisher:Public Library of Science
Citation:Plos One 5(11): e13900 (2010)
Abstract:Every other day feeding (EOD) and exercise induce changes in cell metabolism. The aim of the present work was to know if both EOD and exercise produce similar effects on physical capacity, studying their physiological, biochemical and metabolic effects on muscle. Male OF-1 mice were fed either ad libitum (AL) or under EOD. After 18 weeks under EOD, animals were also trained by using a treadmill for another 6 weeks and then analyzed for physical activity. Both, EOD and endurance exercise increased the resistance of animals to extenuating activity and improved motor coordination. Among the groups that showed the highest performance, AL and EOD trained animals, ALT and EODT respectively, only the EODT group was able to increase glucose and triglycerides levels in plasma after extenuating exercise. No high effects on mitochondrial respiratory chain activities or protein levels neither on coenzyme Q levels were found in gastrocnemius muscle. However, exercise and EOD did increase b-oxidation activity in this muscle accompanied by increased CD36 levels in animals fed under EOD and by changes in shape and localization of mitochondria in muscle fibers. Furthermore, EOD and training decreased muscle damage after strenuous exercise. EOD also reduced the levels of lipid peroxidation in muscle. Our results indicate that EOD improves muscle performance and resistance by increasing lipid catabolism in muscle mitochondria at the same time that prevents lipid peroxidation and muscle damage.
Publisher version (URL):http://dx.doi.org/10.1371/journal.pone.0013900
URI:http://hdl.handle.net/10261/35650
ISSN:1932-6203
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Appears in Collections:(CABD) Artículos

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