Sections View Full Chapter Figures Tables Videos Annotate Full Chapter Figures Tables Videos Supplementary Content + Download Section PDF ++ Charity Johansson, PT, PhD ++ Geriatric Clinical Specialist ++ Professor ++ Elon University ++ Elon, North Carolina ++ ++ Susan A. Chinworth, PT, PhD ++ Associate Professor ++ Department of Physical Therapy ++ Education ++ Elon University ++ Elon, North Carolina