Suzann K. Campbell, PT, PhD, FAPTA, Professor, Department of Physical Therapy, College of Health and Human Development Sciences, University of Illinois at Chicago, Chicago, IL, Robert J. Palisano, PT, ScD, Professor, Drexel University, Department of Rehabilitation Sciences, Philadelphia, PA and Margo Orlin, PT, PhD, Associate Professor and Interim Chair, Drexel University, Department of Physical Therapy and Rehabilitation Sciences, Philadelphia, Pennsylvania