Influence of training on skeletal muscles; Influence of training on metabolism; Adaptation of the heart and circulation to physical exertion effects of training on circulation. Stroke volume and training. Heart rate and training; Minute volume and training; Blood pressure and training; Importance of sport in the prevention of cardiovascular diseases; effect of training on lung function; Training and breathing; Breathing in the different sports exercises. Blood; Training at different ages; Nutrition during training; Training methods.