Study On Rehabilitation Effect Of Balance Training With Visual Disturbance On Patients With Chronic Ankle Instability

Objective: Compare the effects of 8-week visual interference balance training and balance training on self-reported ankle function,lower limb biomechanics and dynamic balance ability of patients with chronic ankle instability(CAI).Methods: 36 subjects were randomly divided into control group(Con),balance training group(BT)and strobe training group for visual interference group(SBT),with 12 in each group.Con received health education during the experiment,BT received balance training,and SBT wore stroboscopic glasses during the balance training.The training lasted for 8 weeks,3times a week.The scores of Cumberland Ankle Instability Tool(CAIT),Perceived Ankle Instability(PAI),biomechanical data of ankle joint in the process of falling and the results of Y-balance test were compared before and after training,and SPSS 26.0 was used for statistics.Results:(1)There was no significant difference in Con group before and after intervention(P>0.05).(2)After 8 weeks of intervention,there were significant differences between BT group and SBT group in CAI score,PAI score,range of inversion and eversion angles,touchdown inversion and plantar flexion angle,sagittal and coronal joint angle at peak moment of ground reaction,peak vertical ground reaction force,vertical load rate,plantar flexion and inversion peak moment and Y balance test(P<0.05).(3)The results of CAI score,PAI score,inversion and plantar flexion angle,sagittal and coronal joint angle at peak moment of ground reaction,vertical load rate,peak moment of plantar flexion and Y balance test in BT group and SBT group were significantly different from those in Con group(P<0.05);There were significant differences in the range of inversion angle,peak vertical ground reaction force and peak moment of inversion between Con group and SBT group(P<0.05);There was no significant difference between SBT group and BT group and Con group in the range of flexion and extension angle(P>0.05);There were significant differences between SBT group and BT group only in the CAI score,PAI score,the angle of inversion,the angle of coronal joint at the peak moment of ground reaction,the vertical load rate and Y-AN(P<0.05).Conclusion:(1)Both balance training and visual interference balance training can improve ankle function,dynamic balance ability and lower limb kinematics and dynamics of CAI patients.(2)Visual interference balance training is better than balance training in terms of ankle function,dynamic balance ability and lower limb kinematics of CAI patients.Visual interference has a beneficial effect on balance training.