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Authors
Oester, Chelsea https://orcid.org/0000-0002-0364-6689
Norris, Dean
Lovell, Ric
Pedlar, Charles
Bruinvels, Georgie
Kalkhoven, Judd T.
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Funding
Funding for this research was provided by:
Western Sydney University
Fédération Internationale de Football Association
Orreco Ltd.
Western Sydney University
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Article History
Accepted: 19 February 2026
First Online: 23 March 2026
Declarations
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: Two of the authors (Charles Pedlar and Georgie Bruinvels) are consultants with Orreco, which offers the free FitrWoman menstrual cycle tracking app for athletes. The authors do not consider this affiliation to be directly relevant to the content of the present article, as no tracking apps are discussed or evaluated. However, in the interest of full transparency, this affiliation is declared here.
: Not applicable.
: Not applicable.
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