Task-oriented Training for Stroke: Impact on Function Mobility

Inclusion Criteria: * Stroke \> 6 months prior with residual hemiparetic gait in women or men aged 40-85 years. * Completion of all regular post-stroke physical therapy * Adequate language and neurocognitive function to participate in testing and training and to give adequate informed consent. * Able to rise from a chair unaided. * Able to walk 10 meters without human assistance. Exclusion Criteria: * Regular structured aerobic exercise (\> 2x week). * Alcohol consumption \> 3 oz. liquor, or 3 x 4 oz glasses of wine, or 3 x 12 oz. beers per day, by self-report. * Clinical history of * unstable angina, * recent (\< 3 months) myocardial infarction or congestive heart failure (NYHA category II), * hemodynamically significant valvular dysfunction, * Peripheral Arterial Obstructive Disease with claudication, * major orthopedic, chronic pain, or non-stroke neuromuscular disorders restricting exercise, * pulmonary or renal failure, * poorly controlled hypertension (\>190/110), measured on at least two separate occasions * recent hospitalization for severe disease or surgery * severe or global receptive aphasia which confounds reliable testing and training. * Untreated major depression as documented by a Center for Epidemiological Studies-Depression score of \>16 and confirmed by clinical interview. * Pregnancy.