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. 2019 Sep 10;1:13. doi: 10.3389/fspor.2019.00013

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Copyright © 2019 Carragher, Rankin and Edouard.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Weekly prevalence of health problems [all and substantial health problems (A), illnesses (B), acute injuries (C) and overuse injuries (D)] reported during the 30-week follow-up period.