Post Stroke Ambulation Recovery Using Robotic Exoskeletons

Inclusion Criteria: * Stroke survivors 3 - 8 months from a recent stroke. * Age: 50 - 80 years * Unilateral hemiparesis * Medical clearance by the Medical Director * Be able to physically fit into the exoskeleton device: Height between 60\" and 76\" and weight below 220 lbs * Patient cognitive status and ability to communicate in English must be at a level consistent with that required to participate in standard motor rehabilitation (e.g. can follow directions). * Adequate cognitive function to give informed consent, understand the training, instructions, use investigational devices and give adequate feedback. * Have a joint range of motion within normal functional limits for ambulation. * Have sufficient strength to use the hemiwalker, cane or walker (etc. assistive device) while wearing the RE. * No history of injury or pathology to the unaffected limb. * Have an appropriate walking speed as determined by the study staff. Exclusion Criteria: * Any medical issue that precludes full weight-bearing and ambulation (e.g. orthopedic injuries, pain, severe spasticity). * Skin issues that would prevent wearing the device. * Pre-existing condition that caused exercise intolerance (documented uncontrolled hypertension, coronary artery disease, cardiac arrhythmia, or congestive heart failure). * Hospitalization for heart attack, heart surgery, or acute heart failure within 3 months of enrollment in the study. * Uncontrolled seizure disorder, spasticity, or joint contracture that would interfere with walking. * Neuromuscular, neurological, or orthopedic pathologies that interfere with neuromuscular function, ambulation, or limit the range of motion of the lower limbs.