[Dependence of lactate and heart rate in ergometer-, running- and swimming stress and its use for the preparation of individual conditioning programs for patients with myocardial infarct in rehabilitation phase III].

The dependence of the heart rate of 25 patients between 6th and 12th month after myocardial infarction on the lactate deflection during bicycle ergometry was compared with values being measured in physical conditioning in gymnasium and in indoor swimming-bath. There were found congruent statements in all three types of stress. The immediate comparison of patients undergoing rehabilitation who realized a gymnasium and swimming program simultaneously, showed no differences in lactate deflection and heart rate, too. So heart rates of equal level signal the production of equal metabolic training irritations in the three types of stress being tested. Moreover it was to be ascertained that the optimum intensity of the physical conditioning of patients with myocardial infarction is reached with a lactate deflection of 2,5 to 4,0 muMol/1, appropriate to a heart rate of 104 to 120 beats every minute resp. an efficiency of 70% of the submaximum aerobic capacity.