More than 80% of ischemic stroke (IS) patients have some walking disability, which restricts their independence in the activities of daily living. Physical therapy (PT) significantly contributes to gait recovery in patients after IS. However, it remains unclear, what type of gait training is more effective and which factors may have impact on gait recovery. Two hundred fifty IS patients will be enrolled to undergo a 2-week intensive inpatient rehabilitation including randomly assigned robot-assisted treadmill gait training (RTGT) or therapist-assisted treadmill gait training (TTGT). A detailed clinical and laboratory assessment of gait quality, as well as the degree of neurological impairment, quality of life, cognition and depression will be performed in all patients during the study. We hypothesize that these variables may also affect gait recovery in patients after IS. In a randomly selected 60 enrolled patients, a multi-modal magnetic resonance imaging (MRI), including functional MRI, will be performed to assess neural correlates and additional predictors of gait recovery.