The constraint induced movement therapy (CIMT) in the last 15 years has accumulated a lot of scientific evidence on the recovery of the upper paretic arm in subacute hemiplegic patients [1]. Our research hypothesis was to determine: (1) if CIMT can show more improvement than a task-intensive rehabilitation therapy without immobilizing the unaffected arm; (2) if that improvement be due to a compensatory muscle activity or of a previous selective movement's recovery. With the present study we used dynamic electromyography, stereophotogrammetric system using a new protocol proposed for shoulder and humerus kinematic [2] and transcranial magnetic stimulation (TMS) to discover any changes in cortical mapping.