The influence of an individualized sports program on dilated cardiomyopathy patients will be investigated in a randomized, prospective intervention study. 300 patients with dilated cardiomyopathy are included and examined over a period of 13 months. All participants will receive an Apple Watch, which serves for monitoring of activity and symptoms.The primary endpoint of the study is the change in maximum oxygen intake. In addition, the changes in well-being, objective parameters of cardiac function and the subject's compliance to his excercise program are of interest as secondary endpoints and for further exploratory research. In addition, the safety of a personalized sports program is evaluated. Molecules circulating in the blood (including proteins, RNA) are beeing measured at the beginning and in the course of the training program in order to be able to derive a connection between the training and the changed cardiovascular function. A gene analysis will be carried out, which serves to identify the genetic requirements of protective excercise.