The study will be interventional single case experimental design (SCED) with multiple baseline design. SCED are experimental designs aiming at testing the effect of an intervention using a small number of patients using repeated measurements, sequential and randomized introduction of an intervention and method-specific data analysis, including visual analysis and specific statistics.~During baseline, patients will have a rehabilitation program in day hospital (4 days per week) with physiotherapy and physical activity and if necessary occupational and speech therapy. Isokinetic strength training will be added to this conventionnal rehabilitation program and will begin after 3, 4 or 5 weeks of baseline according to randomization~12 patients will be included in this study (6 patients in subacute stage and 6 in chronic stage ).
The purpose of this study is to assess the impact of an isokinetic strength training of knee flexor and extensor muscles on walking performance in hemiparetic patients with knee extension thrust.