Heart failure is a clinical syndrome with different etiologies and phenotypes. For all forms, supervised exercise training and individual physical activity are class IA recommendations in current guidelines. Exercise training can start in the hospital, immediately after stabilization of acute heart failure (phase I). After discharge, it can continue in a stationary or ambulatory prevention and rehabilitation program (phase II). Typical components are endurance, resistance and respiratory training. Health insurances cover costs for three to six months. Patients with implantable cardioverter defibrillators or left ventricular assist devices may train in experienced centers.
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During the last years, muscle strengthening exercises have been included as an essential part in youth physical activity guidelines of national and international health organisations. It is well-documented that strength training is effective in improving physical fitness and promoting health and psycho-social well-being. Therefore, the purpose of this review article is to present empirical evidence on the effectiveness of strength training in children and adolescents.
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Quantifying actual individual training intensity in resistance training is essential for athletes and trainers, but is at present only possible with methodological problems. Thus, the purpose of this article is to examine the relationship of different types of RPE (rating of perceived exertion) with blood lactate concentrations in hypertrophy training. Hereby it is possible, to deduce conclusions about the validity of the RPE-scale and different times of monitoring. In this article two studies with male subjects are presented (study 1: n=10, 23.7 ± 2.8 years; study 2: n=16, 24.9 ± 2.0 years). In both surveys, subjects had to complete 3 sets with 3 minutes of rest between sets in every exercise. Blood lactate was measured before each exercise and two minutes after the completion of each set.
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