Patients returned after a 6 week non-intervention period when the above-listed outcomes were repeated. They were then given instructions on how to use the Wii Fit unit to perform exercise at home and instructed to perform at least 30 minutes of specified exercises on most days of the week. The required exercises, in sequence, were 1) "Basic Run" (warm up exercise); 2) "Bird's Eye, Bull's-Eye" (mostly upper arm exercise); 3) "Free Step" (mostly lower extremity exercise); 4) "Obstacle Course" (upper and lower extremity exercise); and 5) "Basic Run" (cool down exercise). Additional, ad-lib exercises using this device were allowed. They were instructed to maintain a diary, recording the dates of each session and the total number of minutes devoted to this exercise. Other exercises not based on this system were allowed but not recorded.