Exercise training in chronic heart failure: why, when and how.

摘要: The management of patients with chronic congestive heart failure has changed considerably during the last decade. Until recently, restriction physical activity was recommended for failure. However, knowledge that training influences largely periphery rather than itself led to a dramatic change in approach toward Why train failure: Training increases exercise tolerance by an average 20% regardless etiology (ischemic or non-ischemic cardiomyopathy) severity left ventricular dysfunction. Available data, while limited, demonstrate capacity are paralleled improvement quality life. Studies have consistently demonstrated no deleterious effect on central haemodynamics, remodeling, systolic diastolic function, myocardial metabolism. At present, there insufficient data determine prognosis, but trials currently underway address this. When Exercise should be performed only been stable clinical condition period at least 3-4 weeks. Clinical stability is defined as symptoms, weight, drug regimen, NYHA class over this period. How Initially, program supervised 2 4 weeks; home-based programs usually appropriate thereafter. Activities can maintained lifetime encouraged, and focus aerobic-type activities. intensity level targeted about 50%-70% peak VO2 and/or Borg ratings 12-14 ("walk talk").