1 Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada kjschnei@ucalgary.ca.
2 Wits Sport and Health (WiSH), School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg-Braamfontein, South Africa.
3 Psychology, University of Missouri Kansas City, Kansas City, Missouri, USA.
4 Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Victoria, Australia.
5 La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Victoria, Australia.
6 Murdoch Childrens Research Institute, Parkville, Victoria, Australia.
7 Cabrini & Austin Health Neurosurgery Departments, University of Melbourne, Melbourne, Victoria, Australia.
8 Physiotherapy Department, University Hospitals Dorset NHS Foundation Trust, Poole, UK.
9 School of Sport, Health and Exercise Science, University of Portsmouth, Portsmouth, UK.
10 Para Football Foundation, Amsterdam, The Netherlands.
11 Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital and Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
12 Spine Unit, Schulthess Clinic Human Performance Lab, Zurich, Switzerland.