The effect of visual task on postural control in subjects with right and left chronic Hemiparesis (Pilot study)

The role and importance of dual task with right hemisphere in postural control has been reported in many previous studies but the effect of visual task levels on postural control in subjects with right and left hemi paretic is not yet known. This study was aimed to compare the effect of visual tasks on postural control in individuals with left and right chronic hemiparesis.

Participants were 6 rights and fourteen left hemiparesis selected by simple non probability sampling. Postural control tasks examined on force plate in different conditions; eyes open/close، visual inspection near/far، visual search near/far. Center of pressure sway parameters in this study were area، mean velocity، path length and phase plan total. All data were analyzed by SPSS، version 16.

The main effect of postural task were significant in all parameters، including mean velocity، path length، phase plan total except area، Also، main effect in affected side was prominently significant only at the area parameter (P ≤ 0. 05). There is no significant difference in interaction of affected side with postural task except in phase plan total (P > 0. 05).

Because of no difference between visual task effect on right and left hemi paresis postural control، it can be noted that these two groups use similar strategies for doing this task.