Non-Invasive Spinal Cord Stimulation After Injury

The goal of this study is to assess the function of the lungs and the muscles are used to breathe after individuals receive respiratory training, spinal cord stimulation, a combination of respiratory training and stimulation, a combination of arm training and stimulation, or a combination of trunk training and stimulation. The respiratory, arm, and trunk training combined with the spinal stimulation interventions are being used to activate the spinal cord below the level of injury. Investigators will be looking for changes in the function of the lungs and trunk muscles before, during, and after these task-specific and non-task-specific interventions for breathing to determine which one has the greatest effect. The results of this study may aid in the development of treatments to help individuals with spinal cord injuries that have impaired lung, arm, and trunk function.