Funding for this research was provided by:
Versus Arthritis (21755)
Manchester United (Sponsorship for PhD study programme)
Received: 13 November 2019
Accepted: 30 April 2020
First Online: 27 May 2020
Ethics Approval and Consent to Participate
: The data usage was approved by Manchester United Football Club and the Research Ethics Service at the University of Manchester. Informed consent was not required as data were captured from the mandatory PHE completed through the participants’ employment.
: Not required.
: Tom Hughes and Michael J. Callaghan are employed by Manchester United Football Club. Richard D. Riley and Jamie C. Sergeant declare that they have no known conflicts of interest.