1. J.B. Snow Biomechanics Laboratory, Department of Health and Exercise Science, Wake Forest University, Winston-Salem, North Carolina, USA
2. Department of Orthopaedic Surgery, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
3. Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
4. Department of Kinesiology, East Carolina University, Greenville, North Carolina, USA
5. Wayne Cannon Physical Therapy and Associates, Winston-Salem, North Carolina, USA
6. Military Performance Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts, USA