Funding for this research was provided by:
Red Bull Athlete Performance Centre (Red Bull Athlete Performance Centre)
Received: 23 March 2021
Accepted: 28 July 2021
First Online: 16 August 2021
: The current study was a side project of a study conducted in the context of the scientific surveillance of five selected, professional Austrian Football clubs. The study protocol of the initial study and all procedures were approved by the Austrian ethics committee of Salzburg county (statement of the ethics board of Salzburg county, ID 415-EP/73/820–2020, 8 June 2020). Participants were informed about the study purpose and procedures in writing and gave informed consent.
: Not applicable.
: The authors declare that they have no competing interests.