1. Neurovascular Physiology Laboratory, School of Kinesiology, Auburn University, Auburn, Alabama, United States
2. Department of Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware, United States
3. Division of Geriatric Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
4. War Related Illness and Injury Study Center, Washington DC Veteran Affairs Medical Center, Washington, District of Columbia, United States
5. Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, Florida, United States