Efficiency of Spatially Distributed Sequential Stimulation (Sdss) for Functional Electrical Stimulation (FES) of Upper Motor Neuron Syndrome (UMR) Patients

Inclusion Criteria: Patients with Upper Motor Neuron syndrome: * adult (\> 18 years) * motor deficit due to an acquired traumatic or neurodegenerative motor deficiency of the central nervous system (MRC\<4/5) * stable clinical condition, particularly on the cardiovascular level (recent assessment by a cardiologist with stress test) * non denervated muscles * tolerant to muscle electrical stimulation * having given written consent * able to cycle 30 minutes with FES-cycling Exclusion Criteria: * major cognitive comprehension disorders that could compromise understanding of the protocol and the smooth running of the study * cardiac pacemaker and other contraindications relating to the use of electrostimulation (in particularly "deep vein thrombosis") * spasticity of the lower limbs making flexion/extension movement difficult * participation in another study * pregnancy * people with the following legal and administrative states or situations: * people placed under judicial protection; * persons deprived of their liberty, persons subject to psychiatric care and persons admitted to a health or social establishment for purposes other than that of clinical investigation; * unemancipated minors; * people who are not affiliated to a social security scheme or beneficiaries of such a scheme