 The specific aims will be i to test the effects on walking, mobility, balance, fatigue and health-related quality of life; ii to test the effects on cerebral oxygenation fNIRS during walking; iii muscle oxygenation NIRS; iv force and EMG signal; v Mechanical and electrical fatigue assessment; vi brain connectivity EEG and vii to investigate the 3 months home exercise programs feasibility, satisfaction and adherence. 