1. School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham B15 2TT, UK
2. Spinal Surgery, The Royal Orthopaedic Hospital NHS Foundation Trust, Birmingham B31 2AP, UK
3. School of Physical Therapy, Western University Canada, London, ON N6A 3K7, Canada
4. Physical Therapy Department, University of Tabuk, Tabuk 47512, Saudi Arabia