Document Type : Research Paper I Open Access I Released under CC BY-NC 4.0 license
Authors
1 Department of Behavioral and Cognitive Sciences in Sport, Faculty of Sport and Health Sciences , University of Tehran, Tehran, Iran.
2 Department of Motor Behaviour, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.
3 Department of Behavioral and Cognitive Sciences in Sport, Faculty of Sport and Health Sciences, University of Tehran,Tehran , Iran.
4 Department of Motor Behavior, Faculty of Sport Sciences, University of Arak, Arak, Iran.
Abstract
Introduction:Children with developmental coordination disorder exhibit weaknesses in performing and tracking aiming-catching tasks. The present study aimed to investigate the effect of visual occlusion on aiming-catching skills and quiet eye duration in children with developmental coordination disorder.
Methods: In this semi-experimental study, which was conducted with a repeated measurement design, 26 children with developmental coordination disorder with an age range of 7 to 9 years were selected from among the girls and boys with developmental coordination disorder in Khorasgan Welfare and Rehabilitation Center of Isfahan. The participants threw 10 balls towards the wall and simultaneously catching the return ball under three conditions of full vision, initial occlusion, and late occlusion. At the same time as throwing and receiving the ball, the eye movements of the participants were recorded by a eye tracking device, as well as their performance score. The data were analyzed by within group analysis of variance with repeated measurements and Bonferroni post hoc test.
Results: The results showed that the performance of aiming-catching skills and the length of the quiet eye period in the conditions of initial occlusion and late occlusion were significantly weakened compared to the conditions without occlusion (p<0.05). Also, the results showed that initial occlusion caused further weakening of aiming and catching skills as well as a shorter period of quiet eye compared to late occlusion (P<0.05).
Conclusion: In general, the results of the present research support the role of the pre-programming system in the implementation of aiming and catching skills in children with developmental coordination disorders.
Keywords
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