[(Surviving) life with cancer: the importance of sport and physical activity].

As the survival prognosis of cancer patients continues to improve, the improvement in quality of life during and after cancer treatment is becoming increasingly important 1. Exercise therapy has a positive effect on so-called "patient-reported outcomes" 2. The combination of endurance training and individualized strength training plays a particularly important role here. There is therefore a need for consistent and comprehensive implementation of quality-assured exercise therapy in everyday clinical practice.