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Contributors AG produced the concept for the editorial, drawn from his and DF’s existing work. DF provided critical debate and revisions on the first version of the work. Both authors produced the final version.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests AG is an associate editor with British Journal of Sports Medicine.
Provenance and peer review Not commissioned; externally peer reviewed.
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