1 Faculty of Health and Social Sciences, Bournemouth University, Bournemouth, Dorset, England.
2 The FA Centre for Disability Football Research, The Football Association, St Georges Park, Burton-Upon-Trent, Staffordshire, UK.
3 Centre for Statistics in Medicine, Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, Oxfordshire, England.
4 School of Medicine and Public Health, University of Newcastle, Newcastle, New South Wales, Australia.
5 Pain at NeuRA, Neuroscience Research Australia, Sydney, New South Wales, Australia.
6 Paediatric Department, Poole Hospital NHS Foundation Trust, Poole, Dorset, England.
7 Department of Exercise Science, Elon University, Elon, North Carolina, USA.