1. SJ Farquhar, PT, MPT, is a doctoral student in the Graduate Program in Biomechanics and Movement Science and the Department of Physical Therapy, University of Delaware.
2. DS Reisman, PT, PhD, is Assistant Professor, Department of Physical Therapy, University of Delaware.
3. L Snyder-Mackler, PT, ScD, SCS, ATC, FAPTA, is Professor, Department of Physical Therapy, 301 McKinly Laboratory, University of Delaware, Newark, DE 19716 (USA).