Dr. John J. Leddy is the Professor of Clinical Orthopedics and Rehabilitation Sciences at the University at Buffalo Jacobs School of Medicine and Biomedical Sciences, a Fellow of the American College of Sports Medicine and of the American College of Physicians, and Director of Outcomes Research for the Department of Orthopaedics. He is a Division 1 team physician and Medical Director of the University at Buffalo Concussion Management Clinic. He is a Member of the Expert Panel for the Berlin Fifth International Consensus Conference on Concussion in Sport and a consultant to the NIH on sport concussion research. In conjunction with Dr. Barry Willer, he developed the Buffalo Concussion Treadmill Test.