text: Funding 
  This project was supported by the 2013 Clinical Research Network grant 
  from the Orthopaedic Section, American Physical Therapy Association. The 
  funding body had no role in the design of the study or collection, analysis, 
  and interpretation of the data or in writing the manuscript. TAL received 
  additional support from the Foundation for Physical Therapy with Promotion 
  of Doctoral Studies I & II (PODS I& II) Awards. SZG and JMB received additional 
  support from Brooks Rehabilitation while designing this study. JMB received 
  support from the American National Institutes of Health (NIH) Rehabilitation 
  Research Career Development Program (K12-HD055929). 
  
  Availability of data and materials 
  The data that support the findings of this study are available from the 
  corresponding author upon reasonable request. 
  
  Authors’ contributions 
  TAL provided input on study design and analysis plan, drafted the manuscript 
  and approved final version of the manuscript. SZG secured funding, provided 
  overall design, gave input on the analysis plan and approved final version of 
  the manuscript. JMB provided input on design and analysis plan and approved 
  final version of the manuscript. 
  
  Ethics approval and consent to participate 
  Ethics approval for this study was granted by the University of Florida 
  Institutional Review Board-01 (Study #: 525–2012). All participants provided 
  written consent to participate in the study. 