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Article History

Received: 23 January 2018

Accepted: 7 August 2018

First Online: 25 August 2018

Authors’ information

: Markus Gerber is assistant professor of sport science at the Department of Sport, Exercise and Health at the University of Basel, Switzerland. Manuel Mücke and René Schilling are PhD students in the Division of Sport and Psychosocial Health at the at the Department of Sport, Exercise and Health at the University of Basel, Switzerland. Flora Colledge is a post-doctoral researcher in the Sport Science Section at the at the Department of Sport, Exercise and Health at the University of Basel, Switzerland. Serge Brand is a senior researcher in the Sport Science Section at the Department of Sport, Exercise and Health at the University of Basel, Switzerland. He also works as a senior researcher and clinical psychologist at the Center for Affective, Stress and Sleep Disorders, Psychiatric Clinics of the University of Basel, Basel, Switzerland. Finally, he is a visiting professor at Kermanshah University of Medical Sciences (KUMS), Substance Abuse Research Center and Sleep Disorders Research Center; Kermanshah, Iran. Sebastian Ludyga is a post-doctoral researcher in the Sport Science Section at the at the Department of Sport, Exercise and Health at the University of Basel, Switzerland.

: Ethics approval has been obtained for all three studies before data assessment from the local ethical review board (Ethical Review Board of Northwestern and Central Switzerland, EKNZ). All participants have provided written informed consent.

: Not applicable.

: The authors declare that they have no competing interests.

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