The emergence of pre-competitive anxiety has been associated with multiple variables such as addiction to training, sources of extrinsic motivation, achievement goals, participants' age, coping skills, and experience in sports. In this study we uses the perspective of the Trait-State and inter-behavioral theories to analyze the explained variance between scores of the Sport Competition Anxiety Test (SCAT) and the Competitive State Anxiety (CSAI-2), two instruments used in Sports psychology for measuring trait and state anxiety respectively. In addition, the impact of the interaction of the State-trait anxiety in different moods, measured by POMS, was considered. A sample of 255 athletes (168 men, 86 women; mean age=20.46; SD=6.08) from various disciplines was selected. Results showed significant differences regarding participants' gender. Also, the potential weight of historical and situational factors is described. A structural model explaining the influence of trait anxiety on state anxiety and its impact on different athletes' moods is reported.