Copyright © 2006, European Society of Cardiology
Beneficial effects of endurance training on cardiac and skeletal muscle energy metabolism in heart failure
aINSERM U-769, Université Paris-Sud, 5 rue J-B Clément, F-92296, Châtenay-Malabry, France
bDépartement de Physiologie, CHRU Strasbourg, F-67091 France
cService de Cardiologie, Hôpitaux Civils de Colmar, F-68024 France
dCentre de Recherches du Service de Santé des Armées, F-38702 La Tronche Cedex, France
* Corresponding author. Tel.: +331 46 83 57 62; fax: +331 46 83 54 75. Email address: renee.ventura{at}cep.u-psud.fr
As endurance training improves symptoms and quality of life and decreases mortality rate and hospitalization, it is increasingly recognized as a beneficial practice for heart failure (HF) patients. However, the mechanisms involved in the beneficial effects of exercise training are far from being understood and need further evaluation. Independent of hemodynamics effects, exercise training participates in tissue remodeling. While heart failure induces a generalized metabolic myopathy, adaptation to endurance training mainly improves energetic aspects of muscle function. In the present review, after presenting the main characteristics of cardiac and skeletal muscle energy metabolism and the effects of exercise training, we will discuss the evidence for the beneficial effects of endurance training on cardiac and skeletal muscle oxidative metabolism and intracellular energy transfer in HF.
These beneficial effects of exercise training seen in heart failure patients are also relevant to other chronic diseases (chronic obstructive pulmonary disease, diabetes, and obesity) and even for highly sedentary or elderly individuals [Booth F.W., Chakravathy M.V., Spangenburg E.E. Exercise and gene expression: physiological regulation of the human genome through physical activity. J Physiol (Lond) 2002;543:399–411][1]. Physical rehabilitation is thus a major health issue for populations in industrialized countries.
KEYWORDS Energy metabolism; Mitochondria; Heart failure; Heart; Skeletal muscle; Creatine kinase; Endurance training; Mitochondrial biogenesis
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