ICU treatment often involves immobilization and sedation that may lead to both muscle weakness, critical illness myopathy and/or polyneuropathy. This may not only affect the patients during the ICU or hospital stay, but also for a longer post-discharge period. A recent study demonstrated that measured physical health related quality of life was impaired for up to one year after hospitalization, and that the physical performance at five years post-discharge continued to be lower than in the background population. The physical impairments may also influence patient's working ability, and among previously working individuals only half had returned to work within the first year after ICU hospitalization. After five years, up to 25 % still had not returned to work.