Neurorehabilitation of Sequence Effect in Parkinson's Disease

All patients will be treated with an in-hospital rehabilitation program focused on the rehabilitation of gait disorder in PD with 90-minute daily sessions, 6 days a week (Monday through Saturday) for four weeks. The rehabilitation treatment includes passive, active-assisted, and active exercises, isotonic and isometric exercises for the major muscles of the limbs and trunk, cardiovascular warm-up exercises, muscle stretching exercises for functional purposes, balance training exercises, specific motor exercise for hypokinesia, and 45 minutes of overground gait training delivered without devices or cueing The rehabilitation program is the same in PD patients with and without FOG.