en آسیب شناسی ورزشی و حرکات اصلاحی Sport injury and corrective exercises پژوهشي Research <p style="text-align: justify;"><strong>Purpose:</strong> The present study aimed to investigate the effect of sensory and movement speed&nbsp;manipulations on bimanual coordination dynamics. Here we compared to what extent the absence&nbsp;and or bias of different sensory modalities affect performance of coordination of movements.<br> <strong>Methods:</strong> Fifteen physical education students of Shahid Beheshti University (aged 18-25&nbsp;years) were participated in the study. Participants performed bimanual in-phase and anti-phase&nbsp;movements with their wrists at 3 levels of speed ranging from slow to fast and 4 different sensory&nbsp;conditions, including 1) Normal sensory input; 2) Masked vision; 3) Masked proprioception; and<br> 4) Full sensory deprivation. Separate analyses of variance (ANOVA) with repeated measures&nbsp;on speed and sensory conditions were conducted for the in-phase and anti-phase movement&nbsp;patterns, followed by post hoc analyses using the Bonferroni correction. The dependent variable&nbsp;was error of relative phase.<br> <strong>Results: </strong>In line with observations from previous studies, results of our study showed that&nbsp;increasing movement speed influenced performance of the anti-phase (P=0.001) but not the&nbsp;in-phase (P=0.9) coordination patterns. Specifically, as speed increased from slow to fast, the&nbsp;performance of 1800 anti-phase patterns destabilized, with participants showing higher error<br> scores of relative phase. Sensory manipulation showed that proprioception and vision did&nbsp;influence the accuracy and consistency of the coordination tasks in both the in-phase and antiphase&nbsp;movement patterns (P=0.001).<br> <strong>Conclusion:</strong> The performance of a bimanual linear coordination task depends mainly on the&nbsp;availability of proprioceptive input.</p> Bimanual coordination, Feedback, Vision, Proprioception 41 48 http://ptj.uswr.ac.ir/browse.php?a_code=A-10-98-2&slc_lang=en&sid=1 Ebrahim Norouzi ebrahim.norouzi68@gmail.com Yes Department of Human Motor Behavior, Faculty of Physical Education & Sport science, Shahid Beheshti University, Tehran, Iran. Alireza Farsi No Department of Human Motor Behavior, Faculty of Physical Education & Sport science, Shahid Beheshti University, Tehran, Iran. Mohammad Vaezmousavi No emam hossin university