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Brazilian Journal of Medical and Biological Research
versão On-line ISSN 1414-431X
BRUM, P.C. et al. Aerobic exercise training in heart failure: impact on sympathetic hyperactivity and cardiac and skeletal muscle function. Braz J Med Biol Res [online]. 2011, vol.44, n.9, pp. 827-835. ISSN 1414-431X. http://dx.doi.org/10.1590/S0100-879X2011007500075.
Heart failure is a common endpoint for many forms of cardiovascular disease and a significant cause of morbidity and mortality. Chronic neurohumoral excitation (i.e., sympathetic hyperactivity) has been considered to be a hallmark of heart failure and is associated with a poor prognosis, cardiac dysfunction and remodeling, and skeletal myopathy. Aerobic exercise training is efficient in counteracting sympathetic hyperactivity and its toxic effects on cardiac and skeletal muscles. In this review, we describe the effects of aerobic exercise training on sympathetic hyperactivity, skeletal myopathy, as well as cardiac function and remodeling in human and animal heart failure. We also discuss the mechanisms underlying the effects of aerobic exercise training.
Palavras-chave : Heart failure; Exercise training; Sympathetic hyperactivity; Ventricular function; Cardiac remodeling; Skeletal myopathy.