Badura, Petr http://orcid.org/0000-0003-0261-018X
Madarasova Geckova, Andrea
Sigmundova, Dagmar
Sigmund, Erik
van Dijk, Jitse P.
Reijneveld, Sijmen A.
Article History
Received: 22 August 2017
Revised: 21 May 2018
Accepted: 24 May 2018
First Online: 2 June 2018
Compliance with ethical standards
:
: All procedures performed in the study were in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The study design was approved by the Ethics Committee of the Faculty of Physical Culture, Palacky University, Olomouc (No. 17/2013). Participation in the study was voluntary and anonymous, with no incentives offered to the participants. Parents or legal guardians of the adolescents were notified of the study and its purpose by the school management in advance and could withdraw their child. Prior to administration of the questionnaires, the respondents were also notified of the option to opt out of the study or skip questions that made them uncomfortable.
: This work was supported by the Slovak Research and Development Agency under contract No. APVV-15-0012, by a research grant from the Czech Science Foundation under Reg. No. 17-12579S and by the institutional Grant of the PalackĂ˝ University Olomouc under Reg. No. IGA_FTK_2017_009. The funders had no role in the study design, collection, analysis or interpretations of the data, writing the manuscript, or the decision to submit the paper for publication.
: The authors declare that they have no conflict of interest.