In German rehabilitation clinics the number of patients who has a clear indication for LLT is continuously high since years. Approximately 2,000 patients with cardiac diseases were treated per year per clinic and momentarily approximately three fourth of them have an indication for LLT, mainly patients with CHD. The main length of stay in German rehabilitation clinics is 21 days, which gives the chance and the necessity to optimize LLT, since in approximately 50% of all patients with an indication for LLT treatment targets are not achieved.