1. Research Service Birmingham VA Medical Center Birmingham AL USA
2. Department of Cell, Developmental, and Integrative Biology University of Alabama‐Birmingham Birmingham AL USA
3. Department of Anesthesiology and Perioperative Medicine University of Alabama‐Birmingham Birmingham AL USA
4. National Center for the Medical Consequences of Spinal Cord Injury, James J. Peters VA Medical Center Bronx NY USA
5. Medical Service James J. Peters VA Medical Center Bronx NY USA
6. Departments of Medicine and Rehabilitation Medicine Icahn School of Medicine at Mount Sinai New York NY USA
7. UAB Center for Exercise Medicine University of Alabama‐Birmingham Birmingham AL USA