Background and Aim: The purpose of this study was to investigate the effects of sensory-motor integration on Balance and Reaction time in children with Developmental Coordination Disorder( DCD). Motor developmental coordination disorder (DCD) is a statement that the American Psychiatric Association was described for children who have difficulty in implementing some of the skills and competencies necessary to deal with the needs of the motor suffering their everyday lives, proposed locomotors.

Materials and Methods: This study was a semi-experimental study. Twenty patients (mean age, 8.5years old) were randomly divided into two groups of experimental and control groups from the DCD children rehabilitation center in Kermanshah. Continuous performance test, test improved stork and test walk heel to toe were used. After the pretest, the experimental group had a protocol for 8 weeks, three sessions per week of 120 minutes exercise (Swinging, jumping on Trampoline, baby turn around, turn around and coach children). To investigate the differences between the groups and the effect of exercise, ANOVA with repeated measures design with 2 × 2 (two with double measurement) were used. Post hoc t-test and t-test was used to analyze differences within groups and between groups.

Results: The results showed that the experimental group showed a significant improvement in reaction time, dynamic and static balance. There was a significant difference at post-test in experimental group due to the extent of the practice.

Conclusion: Improvement in balance is more likely due to the increased proprioception and stability. It is also likely to reduce the reaction time of integrated activities due to the pre-movement or speed up of the processing of perceptual or cognitive.

Keywords:  Sensory-motor integration, Balance , Reaction time, DCD