Clinical scores were assessed at baseline and after 4 weeks by neurologists and physiotherapists expert in movement disorders. All evaluations were performed in the morning, one hour after taking drugs. The assessment included: Unified Parkinson's Disease Rating Scale (UPDRS), for clinical evaluation, Berg Balance Scale (BBS), Timed Up and Go Test (TUG), Six Minutes Walking Test (6MWT), Freezing of Gait Questionnaire (FOGQ) and Abnormal Involuntary Movements Scale (AIMS) for motor symptoms evaluation and, finally, Parkinson's Disease Disability Scale (PDDS), for evaluation of the functional impact of the disease. Since in the advanced stages of PD one of the most troublesome complication includes cognitive disorders, a Neuropsychologist performed a cognitive assessment at the admission. The neuropsychological profile was explored using the Mini Mental State Examination (MMSE), a tool for screening of cognitive impairment, and the Frontal Assessment Battery (FAB) for the evaluation of frontal lobe dysfunctions.