The Effect Of Rhythmicauditory Stimulation For The Motor Control Ability Of Upper Limb In The Chronic Stroke Patients

Background: Stroke is one of the high morbidity disease in China,and the motor deficits after stroke is a challenge to the medical profession across the world.With the improved quality of life,the patients demand a better outcome after stroke,in which motor control of the upper limb is a big part.Objective: To explore whether Rhythmic auditory stimulation(RAS)could improve the motor control of upper limb in hemiparesis patients after stroke,which is used for the gait training of stroke patients before.Methods: 30 stroke patients who recruited from the rehabilitation department in Huashan hospital were divided into RAS group and control group.The RAS group(n=15)received 30-min RAS training additionally and the control group(n=15)received additional 30-min routine therapy per day.The intervention of both groups lasted four weeks,five days every week.The assessments included Fugl-Meyer upper limb assessment(FMA-UL),modified Barthel index,Wolf Motor Functional Test(WMFT)and the biceps-triceps co-contraction and co-time of surface EMG,which were performed at baseline and 4 weeks after the intervention.Result: The FMA-UL had statistical difference before and after the intervention in both groups,but didn’t have difference between groups after the intervention statistically.The modified Barthel index and Wolf test before the intervention differed that after the intervention in both groups and there were statistical difference between both groups after the intervention.As for the sEMG,during the elbow extension stage,there was significant difference between the co-time of RAS group pre and post(p=0.00)while the intragroup difference in control group was not significant(p=0.93).The co-time difference intergroup was not significant pre(p=0.94)and significant post(p=0.001).The co-contraction didn’t differ significantly intragroup and intergroup.Conclusion: 20-day RAS improved the temporal parameter and ADL,superior to the lengthened routine in terms of the accomplishment of task-oriented action and the time of muscle activation.