Inclusion Criteria:  Being diagnosed with idiopathic Parkinson's disease Healthy individuals who do not have musculoskeletal disease or any neurological disease that may affect assessments Being between 50-80 years old Volunteer to participate in the study Grade 2-3 on the Modified Hoehn-Yahr Scale To have a score above 24 in the Standardized Mini Mental Test  Exclusion Criteria:  Having an additional neurological or psychiatric disease other than Parkinson's disease Uncontrollable dyskinesia or motor fluctuations Presence of postural hypotension, vision problems (not compensated by the correct lens) or vestibular disorders that may affect balance Presence of cardiopulmonary diseases that may affect gait Presence of orthopedic problems (such as fractures, osteoporosis, osteomyelitis) and inflammatory arthritis that may cause limitation of movement and affect gait and assessment