Inclusion Criteria:  Male and female patients of age between 60 and 85 years, diagnosed with Parkinson's disease by a neurologist. Patients with Hoehn and Yahr stages 1-3. Patients with a stable drug program and acclimated to their current medication use for at least 2 weeks.  Exclusion Criteria:  Cognitive deficits (scores of <26 on the Mini-Mental State Examination). Moderate or severe depression (scores of >17 on the Beck Depression Inventory). Patients with neurological diseases, arthrosis, or total hip joint replacement.