Patients who are randomized to the intervention Self Care group will get advice and support on physical excercise, nutrition and symptom management to perform at home for 12 weeks. Once a week, patients will come to the hospital for follow-up and to exercise with a physiotherapist.

Patients who are randomized to the Control group will receive ordinary health care (from an outpatient clinic), but will also be encouraged to follow recommendation of 150 minutes/week of moderate physical activity (12 weeks). To compensate for the extra attention received by the intervention group by the advice/support, the patients in the control group will be dialed with a nurse at 3, 6 and 9 weeks to discuss their current activity.

Patients who are randomized to the Self Care group will receive oral and written information, advice and support on following activities: excercise (from physiotherapist), nutrition (dietician) and symptom management (nurse), based on patient´s individual needs and abilities. The Self Care group will perform the activities daily at home. Once a week, patients come to the hospital to exercise with the support of a physiotherapist. Once a week or every other week patients will meet (at hospital or by phone) the dietician and nurse to solve possible problems and to follow-up food/nutrition intake and symptoms/symptom management.

The "Short Physical Performance Battery" is composed of "standing balance", "gait speed", and "timed repeated chair rise". The total score range from minimum 0 to maximum 12, with higher scores indicating better physical performance.

Assessed by the questionnaire titled "The Memorial Symptom Assessment Scale- Heart Failure", that evaluates symptoms experienced by the patient in the last week (a total of 36 symptoms, for example pain, nausea, tiredness). A score of 0 is given to a symptom if it is absent. If the symptom is present, it is rated using a four-point rating scale (1-4) for frequency and severity, and a five-point rating scale (0-4) for distress of the symptom with higher scores indicating greater frequency, more severity and higher distress. For each symptom, the average of the frequency, severity and distress will be calculated to produce the outcome symptom burden (total scores ranging from minimum 0 to maximum 4, with higher scores indicating greater symptom burden).

Measured with a non-invasive miniature electronic logger during 4-5 days per time frame

Assessed by the instrument titled "International Physical Activity Questionnaire" (IPAQ). Measure the minutes of physical activity during a day.