1. TN Hilton, PT, PhD, is Assistant Professor, Department of Physical Therapy, Ithaca College, Rochester Center, 1100 S Goodman St, Rochester, NY 14620 (USA). She was a postdoctoral fellow in the Applied Kinesiology Laboratory, Program in Physical Therapy, Washington University School of Medicine, St Louis, Missouri, when this study was conducted.
2. LJ Tuttle, PT, is a doctoral student, Movement Science Program, Program in Physical Therapy, Washington University School of Medicine.
3. KL Bohnert, MS, CDT, is Research Coordinator, Applied Kinesiology Laboratory, Program in Physical Therapy, Washington University School of Medicine.
4. MJ Mueller, PT, PhD, FAPTA, is Associate Professor, Program in Physical Therapy and Department of Radiology, Washington University School of Medicine.
5. DR Sinacore, PT, PhD, FAPTA, is Associate Professor, Department of Medicine and Program in Physical Therapy, and Director, Applied Kinesiology Laboratory, Washington University School of Medicine.