Early Exercise Training in Patients Following Heart Valve Surgery for Infective Endocarditis.

Inclusion Criteria: * (1)patients presenting with confirmed infectious endocarditis, with left-sided heart valve surgery and without arterial embolus, * (2)being residents of Northern Norway, * (3)willing and able to give informed consent 4-21 days after the heart valve surgery. Exclusion Criteria: * (1)patients who are hemodynamically or respiratory unstable, have temperature \> 38 or positive blood cultures * (2)clinically significant serious concurrents medical condition such as premorbid illnesses and other concurrens serious infection which could affect the safety or tolerability of the intervention * (3)clinically significant concurrens musculoskeletal disorder or other concurrent disease or injury that may inhibit physical activity.