Determinants of Selection and Non-Selection Young Taekwondo Athletes: Integrating Multidisciplinary Assessments

This study identifies factors distinguishing selected and non-selected young Brazilian taekwondo athletes, focusing on physical attributes, age, maturity, sociodemographic, training characteristics, and psychosocial factors. One hundred and forty-nine athletes (77 males, 72 females) were divided into selected (<i>n</i> = 99) and non-selected (<i>n</i> = 50) groups. Anthropometric measurements (body mass and stature) and training characteristics (years of practice, weekly training duration) were assessed, followed by psychosocial questionnaires (sources of enjoyment, coach-athlete relationship, and sport mental health continuum). Student t-tests and linear regression analyses were conducted, with a 5% significance level. Results showed that selected athletes had higher in training volume per week (<i>p</i> = .023) and better coach-athlete relationship score (<i>p</i> = .050). Additionally, athletes from the Southeast region had 3.25 times higher odds of being selected, while those from the South had 2.77 times higher odds. Furthermore, athletes with seven or more years of practice were 2.06 times higher odds more likely to be selected compared to their less experienced peers (<i>p</i> < .05). In conclusion, selected athletes benefited from more intensive training and stronger coach relationships. These findings suggest that young Brazilian taekwondo athletes with access to better training opportunities, particularly in well-supported regions, and extensive practice experience are more likely to succeed in the selection process.