Science and Education Publishing American Journal of Sports Science and Medicine 2333-4606 3 5 2015 11 23 The Effect of Swimming Exercise on Motor Development Level in Adolescents with Intellectual Disabilities 85 89 EN Elif Top Faculty of Sport Sciences, Usak University, Turkey AJSSM2015351 10.12691/ajssm-3-5-1 2015 8 1 2015 9 5 2015 11 21 Objectives: In this study, it was aimed to analyze the effect of swimming exercise on motor development level in adolescents with intellectual disabilities. Methods: A total of 30 mild intellectual disability (MID) individuals between 15-18 age groups participated the study. Bruininks-Oseretsky Test of Motor Pro?ciency-Second Edition (BOT-2)- Short Form were performed to determine basic motor characteristics of children. BOT-2-Short Form was applied to the participants before and after the ten-month swimming exercise program (60 dk/ 3 days /10 week). Results: According to research findings, in terms of body weight, manual dexterity, speed and agility, upper limb coordination, and BOT-2 total point parameters, there was no statistically significant difference found between groups, measurements (pre-test and post-test), groups and their measurements (p>0.05). In terms of fine motor precision, and fine motor integration parameters, while there was no statistically significant difference found between groups (p>0.05); a significant statistical difference was found between measurements (pre-test and post-test), groups and their measurements (p<0.05). In terms of bilateral coordination parameter, while there was no statistically significant difference found between measurements (pre-test and post-test), groups and their measurements (p>0.05); a significant statistical difference was found between groups (p<0.05). In terms of balance parameter and strength, while there was no statistically significant difference found between groups, groups and measurements (p>0.05); statistically significant difference was found between measurements (pre-test and post-test) (p<0.05). Conclusion: Consequently, regularly applied exercise programmes improve life quality level of individuals with MID by contributing to their motor development level.