Treadmill Walking in Individuals With Dementia With Lewy Bodies and Huntington's Disease

Following instructions and familiarization with the treadmill, participants will walk on the treadmill for 20 minutes total with rest periods as needed. Treadmill speed will be set at each participant's overground comfortable walking speed for the first 5 minutes, provided that they can walk safely. If necessary the speed will be lowered until a safe gait is achieved. After 5 minutes the speed will be incrementally increased by10% each 5 minutes (3 times) as long as a safe gait (i.e., no abnormal vital signs, excessive effort, or loss of balance occurrences) can be maintained. If the gait pattern becomes unsafe or more abnormal the speed will revert to the previous safe speed and be maintained at this level until the end of training session.