1. Department of Health and Kinesiology, University of Utah, Salt Lake City, UT, USA
2. Real Salt Lake, Salt Lake City, UT, USA
3. Center for Cognitive Neuroscience, Division of Sport, Health and Exercise Sciences, College of Health, Medicine and Life Sciences, Brunel University London, Uxbridge, United Kingdom
4. School of Health and Welfare, Halmstad University, Halmstad, Sweden
5. U.S. Army Medical Research Directorate-West, Walter Reed Army Institute of Research, Tacoma, WA, USA