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Article History

Received: 21 January 2021

Accepted: 23 July 2021

First Online: 6 August 2021

Declarations

:

: For future publications based on the described research project ethical approval was granted by the independent ethics committee of German Sports University Cologne on October 21st 2020 (version 1.0; reference 146/2020) including participant information material, website information and informed consent form. The written consent to participate is given by the students with the first log-in to the research project website.

: Not applicable.

: The authors declare that they have no competing interests.