The study will be a randomized, controlled clinical trial, involving a physical rehabilitation (PR) group, and a control (CON) group. Fifty subjects who meet the study criteria will be randomly assigned to PR or CON. PR will receive an intensive rehabilitation program consisting of progressive ambulation, transfer training, and resistance exercise during hospitalization. A similar home exercise program will be prescribed during the six months post-hospitalization. The CON group will receive routine medical care as it is currently provided.