 The explorative outcome measures consist of two parts: physical capacity and mental and physical health. Physical capacity is measured by peak VO2 max and 6 minutes walk test at discharge and 4 weeks following surgery. Perceived mental and physical health is measured by the Medical Outcome Study Short Form 36 SF-36 at admission, discharge and 4 weeks following surgery. Furthermore questionnaires measuring anxiety and depression Hospital Anxiety and Depression Scale, health-related quality of life HeartQoL, fatigue MFI-20 cognitive and emotional representation of illness B-IPQ, physical activity IPAQ, self-rated health EQ-5D, sleep PSQI and pain ÖMPSQ 