Funding for this research was provided by:
Bundesinstitut für Sportwissenschaft (IIA1-081901/12-20)
Received: 1 July 2020
Accepted: 13 November 2020
First Online: 15 December 2020
Compliance with ethical guidelines
: A. Hof zum Berge, F. Loch, K. Schwarzenbrunner, A. Ferrauti, T. Meyer, M. Pfeiffer and M. Kellmann declare that they have no competing interests.
: All procedures performed in studies involving human participants or on human tissue were in accordance with the ethical standards of the institutional and/or national research committee and with the 1975 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.