The part of SOMA model (Setting/ Operating/ Monitoring/ Achievement Model) of Burnette and colleagues (2013) focused at monitoring process, with special focus at sport and physical activity has been tested. Specificaly, the relationship between implicit theories (mindset) in sport and achievement, considering meta and action loop as madiators and ego threath as a moderator of this relationship has been tested. As a measurement of mindset, two-factor explicit and implicit measures were used. As mediator measures, two direct measures (assesment of distace form goal and velocity-rate of progress toward the goal) and two indirect measures (Hanin's negative helpful and negative harmful emotions, and goal expectation) were used. Ego threat was created using S-R model. Participants were 263 students of Kinesiology with experience in sport competitions in different sports. Participants complited the batery of online questionnaires. Results did not confirm a difference of direct connection between negative helpful emotions with achievement compared to negative harmful emotions with achievement as expected although those two categories of emotions showed different contribution in explaining specific connections in SOMA model. Path analyses revealed meta and action loop as significant mediators in some connections between implicit theories and achievement. Ego threat was also a significant moderator for certain connections. These findings extend knowledge and contribute to better understanding of relations between implicit theories, monitoring process and achievement in sport and physical activity.