Herrmann, Christian http://orcid.org/0000-0003-4190-2361
Seelig, Harald
Ferrari, Ilaria
Kühnis, Jürgen
Article History
Received: 22 November 2018
Accepted: 16 January 2019
First Online: 7 February 2019
Compliance with ethical guidelines
:
: C. Herrmann, H. Seelig, I. Ferrari and J. Kühnis declare that they have no competing interests.
: This study was approved by the Directorate of Sports of the Cantons Zurich and Uri.