Purpose. Despite the benefits of sport participation to schoolchildren, some highly competitive activities may induce sportspecific physical adaptations that may predispose children to long-term motor impairments. Hence, the aim of this study was to compare the anthropometric characteristics, motor abilities, and posture between schoolchildren actively participating in judo and their peers participating in general physical education classes. Methods. the study included 148 male participants aged 12-14 years. the two groups of subjects were compared in terms of their anthropometrics, posture, and motor abilities. Results. Statistically significant differences were observed in subscapular skinfold and triceps skinfold in favour of the young judokas. Judo competitors also demonstrated better functional coordination, flexibility, explosive force of lower limbs, and pelvic and isometric muscular endurance. In addition, judokas were characterized by better postural alignment relative to shoulders, chest, and abdomen. Conclusions. the results suggest that participation in judo in addition to physical education classes builds specific motor and physical characteristics in children that may aid in healthy body development.