Consulta: creatorFacets:"Medeiros,A."
Registros recuperados: 2
Data/hora: 16/06/2024 04:43:45

Swimming training increases cardiac vagal activity and induces cardiac hypertrophy in rats
Provedor de dados: 56
Autores: Medeiros,A.; Oliveira,E.M.; Gianolla,R.; Casarini,D.E.; Negrão,C.E.; Brum,P.C.
The effect of swimming training (ST) on vagal and sympathetic cardiac effects was investigated in sedentary (S, N = 12) and trained (T, N = 12) male Wistar rats (200-220 g). ST consisted of 60-min swimming sessions 5 days/week for 8 weeks, with a 5% body weight load attached to the tail. The effect of the autonomic nervous system in generating training-induced resting bradycardia (RB) was examined indirectly after cardiac muscarinic and adrenergic receptor blockade. Cardiac hypertrophy was evaluated by cardiac weight and myocyte morphometry. Plasma catecholamine concentrations and citrate synthase activity in soleus muscle were also determined in both groups. Resting heart rate was significantly reduced in T rats (355 ± 16 vs 330 ± 20 bpm). RB was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Swimming-training exercise; Cardiac autonomic balance; Hemodynamics; Hypertrophic effect; Parasympathetic system; Resting bradycardia.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004001200018

Aerobic exercise training in heart failure: impact on sympathetic hyperactivity and cardiac and skeletal muscle function
Provedor de dados: 56
Autores: Brum,P.C.; Bacurau,A.V.N.; Medeiros,A.; Ferreira,J.C.B.; Vanzelli,A.S.; Negrão,C.E.
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.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heart failure; Exercise training; Sympathetic hyperactivity; Ventricular function; Cardiac remodeling; Skeletal myopathy.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000900002