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Sport, Exercise, and Performance Psychology
Sport, Exercise, and Performance Psychology
Editor: Mark R. Beauchamp  
Supplemental Material for
A Cluster-Randomized Controlled Trial to Increase Youth Ice Hockey Coaches’ Beliefs and Use of Need-Supportive Styles
Dennis Bengtsson ORCID Icon, Andreas Stenling, Jens Nygren, Nikos Ntoumanis, and Andreas Ivarsson
Sport, Exercise, and Performance Psychology, Vol. 13, No. 4, pp. 355–371


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