Hand movements are particularly impaired in Parkinson's Disease (PD) patients contributing to functional disability and difficulties in activities of daily living. AMADEO®. is an end-effector system enables intensive training with frequently repeated gripping movements. It offers the possibility to select from between passive, assistive and active modes using exercise of finger strength, finger movement, movement control and a selective activation of the fingers.Aim of this study is to evaluate the efficacy of the end-effector finger system, AMADEO®, on hand-finger movements in PD patients evaluating the improvement on finger tapping and agility of hand movement item scores on the MDS-UPDRS, variation on the active finger strengths and the active and passive Range of Motion (ROM); variation on Electromyographic (EMG)-parameters.