1. Division of Athletic Training, School of Medicine, West Virginia University, Morgantown, West Virginia, USA
2. Korey Stringer Institute, Department of Kinesiology, University of Connecticut, Storrs, Connecticut, USA
3. Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, North Carolina, USA
4. Division of Sports Medicine, United States Olympic & Paralympic Committee, Colorado Springs, Colorado, USA