الفهرس 
High intensity interval training versus continuous training on ventricular remodeling in chronic heart failure patients
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Abstract
Background and purpose: Cardiac remodeling involves changes that manifest clinically as changes in size, shape, and function of the heart in chronic heart failure. Aerobic exercise training has been shown to reverse remodeling in patients with stable CHF. Which exercise intensity yields maximal beneficial adaptations is controversial.Aim of the study: to compare the effect of training programs with high intensity interval versus continuous training on ventricular remodeling, endothelial function, and quality of life in chronic heart failure patients. Materials and methods: forty male patients with chronic heart failure secondary to ischemic heart disease were selected and referred by the cardiologist from the outpatient heart failure clinic National Heart Institute (NHI). Their ages ranged from 50 to 60 years old and ejection fraction{u02C2} 40% they were randomly assigned into two groups group A who received ) high intensity interval training (90-95% of peak heart rate) and group B who received moderate continuous training (50-70% of peak heart rate) 3 times per week for 12 weeks. Before and after training the following measures were obtained: 2D echocardiography for assessment of left ventricular systolic dysfunction (EF%, and left ventricular internal systolic and diastolic dimension and FS %), brachial artery flow-mediated dilation (FMD) for assessment of endothelial function and quality of life (SF-36, Minnesota living with HF questionnaire (MLHFQ)