The computerized expert system is expected to help patients better than the established program. Both interventions are hypothesized to improve self-management competences over and above the rehabilitation treatment (i.e., questionnaire-only group). In comparison to the PCG, both the IG and the ACG are expected to be higher motivated, to adopt a healthy lifestyle, to perform more health behavior and to be less likely to
relapse into previous unhealthy routines. Also, IG and ACG will be healthier as well as they will report more quality of life and rehabilitation satisfaction. In comparison to ACG, the IG is hypothesized to be more effective than the ACG regarding motivation, behavior and social-cognitive predictors of behavior. Moreover, the interventions (ACG and IG) are supposed to be equally effective for cardiac and orthopedic, as well as out-patient and stationary treated rehabilitation patients. After successful evaluation and some adoptions the intervention will be implemented as a self-help program in all eligible rehabilitation clinics and in the internet.