“…In terms of sample composition, the studies differed most in terms of the sports disciplines that were included. While the studies by the original authors of the method (Gotwals & Dunn, 2009; Gotwals et al, 2010) focused on team athletes, in subsequent studies (Nascimento et al, 2015; Pineda-Espejel et al, 2017, 2018) the authors analyzed data from athletes competing in different—team and individual—sport disciplines. However, this factor does not seem to be able to fully explain the internal structure differences found, as the studies by Pineda-Espejel et al (2017, 2018) essentially confirmed the original proposed factor structure and, conversely, Nascimento et al (2015) could not confirm this structure on a similar sample.…”