1 Pain in Motion Research Group, Belgium(1); Departments of Human Physiology and Physiotherapy, Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, Belgium; Department of Physical Medicine and Physiotherapy, University Hospital Brussels, Belgium. Electronic address: Jo.Nijs@vub.ac.be.
2 Pain in Motion Research Group, Belgium(1); Department of Physical Therapy, University of Valencia, Spain.
3 Department of Orthopaedics, University of Gothenburg, Sweden.
4 Pain in Motion Research Group, Belgium(1); Departments of Human Physiology and Physiotherapy, Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, Belgium; Department of Physical Medicine and Physiotherapy, University Hospital Brussels, Belgium.
5 Centre of National Research on Disability and Rehabilitation Medicine (CONROD), Centre for Musculoskeletal Research, Griffith Health Institute, Griffith University, Australia.