Effectiveness Of Rehabilitation Robot Training On Upper Limbs Function And Surface EMG Signal In Stroke Patients

ObjectiveThe purpose of this study was not only to clear the effectiveness of the upper limb rehabilitation robot training on upper extremity movement function recovery in patients with 1-6 months stroke which comparing with the conventional rehabilitation therapy,but also to explore the rehabilitation efficacy and peripheral mechanism of the upper limb rehabilitation robot training through analyzing the s EMG signal change of upper limbs muscle performing functional activities.Methods19 stroke patients who were receiving treatment in the neurology department and the rehabilitation department in the Second Affiliated Hospital of Guangzhou Medical University were recruited during August 2017 to January 2018,and randomly allocated into the Trial group(10 patients)and the Control group(9patients).All patients were treated with basic therapy.In addition,the upper limb rehabilitation robot training was carried out in the Trail group and the rehabilitation therapist assisted conventional training was implemented in the Control group.The Modified Ashworth Scale(MAS),Fugl-Meyer Assessment(FMA),upper limb’s muscle strength and the s EMG signal of upper limbs muscle were evaluated before and after the treatment.Comparing the difference of evaluation index between two groups of patients before and after the therapy.Data of the trial was analyzed with SPSS 22.0.Results1.FMA:Improvements in the total score FMA is obviously higherthan before in the control group(P < 0.05).In the control group,the Fugl-Meyer score of joint movement and separated movementwere improved,but the difference was significant(P > 0.05).After two weeks treatment,the total score of FMA,the Fugl-Meyer score of joint movement and separated movement were significantly higher compared to pretreatment in the trail group(P<0.05),andthe improvement of the experimental group was better than that of the control group(P<0.05).2.Muscle strength: Improvement in the ratio of muscle strength that the upper limb elbow flexion MIVC was significantly improved compared to pretreatment in the control group(P<0.05).Improvement in the ratio of muscle strength that the upper limb elbow extension MIVC was higher than before in the control group,but there was no significant difference(P>0.05).The ratio of the upper extremity muscle strength which the upper extremity elbow flexion and extension MIVC was improved before treatment in the trail group,but the difference was not significant(P>0.05).There was no significant difference of the elbow flexion and extension MIVC muscle strength ratio between the two groups of patients after treatment(P>0.05).3.Muscle tension: The MAS score of the upper extremity was decreased compared to pretreatment in the trail group,but there was no significant difference(P>0.05).4.sEMG: The RMS ratio of biceps and the i EMG ratio of triceps which the elbow flexion was in resting state were lower than before treatment in the trail group,but there was no significant difference(P>0.05).The RMS ratio and i EMG ratio of bicepswhich the elbow flexion was in resting state were lower than before treatment in the control group,but there wasalso no significant difference(P>0.05).Not only the RMS ratio and i EMG ratio of biceps which the upper limb elbow flexion MIVC was improved than pretreatment,but also the i EMG ratio of triceps which the upper limb elbow extension MIVC was enhanced than before in the trail group.However,both the difference was not significant(P>0.05).Furthermore,the i EMG ratio of triceps which the upper limb elbow extension MIVC was increased than pretreatment in the control group,but there was no significant difference(P>0.05).Conclusion1.Both groups are benefited in upper limb motor function of post-stroke by intervention.2.Improvement in upper limb motor function of post-stroke hemiplegic patients by robot-assisted upper limb rehabilitation training was better than conventional occupational therapy.3.The surface electromyography technique has certain reference value for the quantitative measurement of upper limb function changes in the post-stroke hemiplegic patients,but how to analyze objectively and accurately should be further studied.