The objective of KERAAL technological project is to create a new intelligent robot which allows a humanoid robot to record then to show and to follow the progress of rehabilitation session proposed by a physiotherapist to a patient, the latter being able to practice without the physiotherapist. The final objective is to stimulate and increase the overseen time of rehabilitation. Poppy robot was chosen as it is able to realize all kind of movements notably movements of the spine with 5 degrees of freedom associated to the several levels of the spine. It will allow to address the population included in the protocol. RCOOL study tries to validate this prototype device as tool of rehabilitation.