Eisenburger, Nina
Ferrari, Nina
Friesen, David
Haas, Fabiola
Klaudius, Marlen
Schmidt, Lisa
Vandeven, Susanne
Joisten, Christine
Funding for this research was provided by:
Deutsche Sporthochschule Köln (DSHS)
Article History
Received: 6 October 2022
Revised: 9 February 2023
Accepted: 11 February 2023
First Online: 3 March 2023
Declarations
:
: This study was performed in line with the principles of the Declaration of Helsinki. Ethics approval was granted by the Sport University Cologne Committee for Ethics, application number 107/2014, which was updated on May 17, 2021.
: Written informed consent was obtained from the participants’ parents at program entry.
: The authors declare no competing interests.