“…The physical self-concept, based on the model by Stodden et al (2008), was mostly considered to be a mediator of the effect between physical activity and motor competencies . This mediation effect was confirmed in some studies (e.g., Barnett et al, 2008Barnett et al, , 2011Chan et al, 2019;Feitoza et al, 2022;Fu & Burns, 2018;Jaakkola et al, 2019;Jekauc et al, 2017), in others partially (e.g., Capio & Eguia, 2021;Emadirad et al, 2021;Kohaverdi et al, 2016) or not at all (e.g., Barnett et al, 2015;Crane et al, 2015;De Meester et al, 2018;Hall et al, 2019;Slykerman et al, 2016). However, in a more recent meta-analysis by Barnett et al (2022), in which longitudinal studies have been examined since 2015, these effects could not be confirmed.…”