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Return to play criteria after hamstring muscle injury in professional football: a Delphi consensus study
  1. Mattia Zambaldi1,2,
  2. Ian Beasley3,
  3. Alison Rushton2
  1. 1 Fussball Club Suedtirol, Bolzano, Italy
  2. 2 School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
  3. 3 The Royal Ballet, London, UK
  1. Correspondence to Mattia Zambaldi, Via alle Coste, 36 - 38121 Trento - Italy; mattiazambaldi{at}gmail.com

Footnotes

  • Contributors MZ and AR developed the study protocol. All authors approved the study protocol. IB was responsible for initial contact with football clubs. MZ created the online surveys, performed data analysis and prepared the first draft of the manuscript. AR provided feedback and revised manuscript. MZ made necessary changes and all authors approved the final version of the manuscript prior to submission.

  • Competing interests None declared.

  • Ethics approval The University of Birmingham Ethics Committee (UK) approved the study protocol.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Data sharing statement A complete report of the whole Delphi process is available in the online supplementary material. Additional unpublished data are available on request from the corresponding author. The unpublished data contain all the responses given in round 1 of the Delphi process and all the ratings collected for each criterion in rounds 2 and 3.

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Footnotes

  • Contributors MZ and AR developed the study protocol. All authors approved the study protocol. IB was responsible for initial contact with football clubs. MZ created the online surveys, performed data analysis and prepared the first draft of the manuscript. AR provided feedback and revised manuscript. MZ made necessary changes and all authors approved the final version of the manuscript prior to submission.

  • Competing interests None declared.

  • Ethics approval The University of Birmingham Ethics Committee (UK) approved the study protocol.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Data sharing statement A complete report of the whole Delphi process is available in the online supplementary material. Additional unpublished data are available on request from the corresponding author. The unpublished data contain all the responses given in round 1 of the Delphi process and all the ratings collected for each criterion in rounds 2 and 3.

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