Baumann, Freerk T.
Bieck, Oliver
Oberste, Max
Kuhn, Rafaela
Schmitt, Joachim
Wentrock, Steffen
Zopf, Eva
Bloch, Wilhelm
Schüle, Klaus
Reuss-Borst, Monika
Funding for this research was provided by:
Deutsche Rentenversicherung Baden Württemberg
Article History
Received: 14 July 2016
Accepted: 7 November 2016
First Online: 9 December 2016
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study was in accordance with the Declaration of Helsinki and approved by the ethics committee of the German Sports University of Cologne. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.