- The participant must be eligible for the Neurorecovery Network (NRN) Study. Eligibility criteria for the NRN study are as follows: The participant must have a spinal cord injury, at any spinal level or time since injury. Individuals with uncontrolled diabetes, uncontrolled seizures, uncontrolled autonomic dysreflexia, uncontrolled hypotension, unstable angina, history of heart attack, osteoporosis, or weight of more than 275 pounds (due to the weight limit of the partial weight supported treadmill system) are not eligible.