“…The eight subfactors represent aspects of the three sub-competencies of movement competence, control competence, and self-regulation competence. In accordance with theoretical elaborations [40,41], the factors "affect regulation" and "control of physical load" can be interpreted as covering the sub-competence of control competence; the factors of "manageability of endurance demands" (MED), "manageability of strength demands" (MSD), "manageability of balance demands" (MBD), and "self-efficacy" can be considered aspects of movement competence; and finally, "emotional attitude towards PA", "self-control", and "self-efficacy" can be viewed as reflecting self-regulation competence. The present data set supports this assignment pattern ( Figure A1) by exhibiting an "acceptable" [61] model fit, SB-χ 2 /df = 2.92, CFI = 0.926, RMSEA = 0.051 [CI 90 = 0.048-0.054], SRMR = 0.060.…”