The Research On Static Balance And The Brain Electricity Signals Of The Paralysis After Stroke

Part One The reasearch on the intellectual polymorphic balance measure and training systemⅠResearch on the test-retest reliability of the intellectual polymorphic balance measure and training systemObject:Observe the test-retest reliability of the intellectual polymorphic balance measure and training system in different conditions, and discuss the reliability of the system in clinical use.Method:In 6 different conditions (back-support weight reduction with eyes closed, back-support weight reduction with eyes opened watching a referent, back-support weight reduction with visual feed back, normal weight bearing with eyes closed, normal weight bearing with eyes opened watching a referent, normal weight bearing with visual feed back), the parameter of static balance of 45 healthy adults was tested. The static balance parameter included center of gravity, the max oscillation in frontal plane, the mean oscillation in frontal plane, the total length of the track of the COG, the total square of the track of the COG and the lateral velocity in frontal plane. The test was divided into 2 parts. The second one was carried out in 7 days after the first one.Result:1 The ICC for the back-support weight reduction with eyes closed was between 0.487 and 0.885, the test-retest reliability was general credible.2 The ICC for the back-support weight reduction with eyes opened watching a referent was between 0.652 and 0.944, the test-retest reliability was fair.3 The ICC for the back-support weight reduction with visual feed back was between 0.653 and 0.791, the test-retest reliability was fair.4 The ICC for the normal weight bearing with eyes closed was between 0.795 and 0.880, the test-retest reliability was fine.5 The ICC for the normal weight bearing with eyes opened watching a referent was between 0.0.759 and 0.889, the test-retest reliability was fine.6 The ICC for the normal weight bearing with visual feed back was between 0.769 and 0.983, the test-retest reliability was fine. Conclusion:A primary analysis was done on the reliability of intellectual polymorphic balance measure and training system, and it had a fine reliability when testing the static balance, which meant it had a fine repeatability when reflecting the ability of static balance. It could be used to assess the ability of the static balance in clinical work.ⅡAnalysis of the effcet of visual and weight bearing on static balance of the healthyObject:Observe the static balance of the healthy in the conditions of different visual input and weight bearing, and discuss the effect of the visual input and weight bearing on static balance.Method:The static balance of 45 healthy people was tested, and their change of static balance parameter was observed in different conditions, including back-support weight reduction with eyes closed, back-support weight reduction with eyes opened watching a referent, back-support weight reduction with visual feed back, normal weight bearing with eyes closed, normal weight bearing with eyes opened watching a referent and normal weight bearing with visual feed back. The static balance parameter included center of gravity, the max oscillation in frontal plane, the mean oscillation in frontal plane, the total length of the track of the COG, the total square of the track of the COG and the lateral velocity in frontal plane. And the different visual input and weight bearing effect on static balance was compared.Result:1 In the condition of back-support weight reduction with eye closed, there appeared no statistic difference between the ability of static balance with eye closed and eye opened watching a referent, but the ability of static balance with visual feed back was obviously better than that of eye closed and eye opened watching a referent.2 In the condition of normal weight bearing, there appeared no statistic difference between the ability of static balance with eye closed and eye opened watching a referent, but the ability of static balance with visual feed back was obviously better than that of eye closed and eye opened watching a referent.3 Weight bearing had no effect on the ability of static balance regardless what kind of visual input. Conclusion:No matter in weight reduction condition or normal weight bearing condition, there was no obvious difference between the ability of static balance with eyes closed or eyes opened watching a referent, but the ability of static balance with visual feed back was significantly better than that in the conditions of eyes closed or eyes opened watching a referent, which indicated that visual feed back had a fine immediate effect on static balance. Weight bearing had no effect on the ability of static balance with eyes closed or eyes open watching a referent or with visual feedback.ⅢAnalysis of the effect of age and gender on static balance of the healthyObject:Observe the condition of the static balance in different age and gender, and discuss the effect of age and gender on static balance.Method:The static balance of 45 healthy adults was tested, and their change of static balance parameter was observed in different conditions, including back-support weight reduction with eyes closed, back-support weight reduction with eyes opened watching a referent, back-support weight reduction with visual feed back, normal weight bearing with eyes closed, normal weight bearing with eyes opened watching a referent and normal weight bearing with visual feed back. The static balance parameter included center of gravity, the max oscillation in frontal plane, the mean oscillation in frontal plane, the total length of the track of the COG, the total square of the track of the COG and the lateral velocity in frontal plane. The effect of age and gender on static balance were compared.Result:1 In the condition of back-support weight reduction, age had no obvious effect on static balance regardless what kind of visual input.2 In the condition of normal weight bearing, age had no obvious effect on static balance regardless what kind of visual input.3 In the condition of back-support weight reduction, gender had no effect on static balance of eye closed and visual feed back. In the condition of eye opened watching a referent, the control ability of the male was significantly better than that of the female.4 In the condition of normal weight bearing, gender had no effect on static balance no matter with what kind of visual input. Conclusion:No matter in the condition of weight reduction or normal weight bearing, there was no significant difference in the static balance parameter between the young and the middle-aged. There was no difference in the static balance ability between the male and the female in the condition of normal weight bearing.IV Discuss on the relationship between muscle strength and static balance of the healthyObject:Measure healthy adults'muscle strength of the key muscles of the lower limbs and the static balance, and discuss the relationship between the muscle strength and the static balance(symmetry, stability and the control ability).Method:An electronic dynamometer was used to measure the strength of the key muscles of the lower limbs. The key muscles included iliopsoas, quadriceps femoris, biceps femoris, gluteus maximus, semitemdinosus and semimenbranosus, tibialis anterior, gastrocnemius, soleus and peroneus longus and peroneus brevis. And their static balance parameter in normal weight bearing was also tested. The static balance parameter included center of gravity, the max oscillation in frontal plane, the mean oscillation in frontal plane, the total length of the track of the COG, the total square of the track of the COG and the lateral velocity in frontal plane.Result:1 There was no difference in the muscle strength between the right limb and the left limb except the iliopsoas. When referring to about the iliopsoas, the right limb was stronger than the left one.2 In the condition of normal weight bearing, the strength of the gastrocnemius had a positive correlation with the COG, the mean oscillation in frontal plane, the total length of the track of the COG and the total square of the track of the COG. There was no further correlation was found between the other key muscle strength and the static ability yet.Conclusion:In the condition of normal weight bearing, the strength of gastrocnemius had a positive correlation with the symmetry and stability of the static balance, which indicated that a reasonable therapy plan should be carried out to increase the strength of the gastrocnemius to improve the ability of static balance. Part Two The research on character analysis of asymmetry mechanics and intervention of paralysis after strokeObject:Observe the change of the ability of static balance of the paralysis patient under different intervention, and discuss whether the balance training system could improve the motor, balance and ADL ability of the paralysis patients after stroke.Method:10 patient who were definitely diagnosed as stroke(cerebral infarction/ hemorrhage) were randomized divided into 2 groups(ordinary balance training group and balance training system group). They had the same motor rehabilitation therapy. Fugel-Meyer scale was used to assess the motor ability, while the BBS, RMAS and RMI were used to assess the balance ability, and the Barthel 100 was used to assess the ADL. The intellectual polymorphic balance measure and training system was used to test the static balance parameter. After 28 days'treatment, all the data above were tested again.Result:1 Before the therapy, there were no difference in the course of the disease, the motor ability, the balance ability, the ADL and the static balance parameters in different conditions between the ordinary balance training group and balance training system group.2 After the 28 days'treatment, comparison between the balance training system group showed that Fugel-Meyer score, Berg score, and RMI score were significantly improved, while RMAS score and ADL score had a trend to have been improved but without statistic difference. For the ordinary balance training group, Berg score and RMI score were obviously improved, while Fugel-Meyer score, RMAS score and ADL score had a trend to have been improved but with no statistic difference.3 After the 28 days'treatment, static balance parameter for the ordinary balance training group showed no obvious difference before and after treatment. Stability for the research group showed a obvious improvement in the condition of back-support weight reduction with visual feed back comparing with that before the treatment. And other data showed no difference before and after the treatment.4 After the 28 days'treatment, comparing ordinary balance training group and the balance training system group, the latter had a obviously improvement with motor and balance ability. In the condition of back-support weight reduction with eyes closed, the improvement of control ability of the balance training system group was significantly better than that of the ordinary balance training group. In the condition of back-support weight reduction with eyes opened watching a referent and with visual feed back, the balance training system group showed no significant difference to the ordinary balance training group. In the conditions of normal weight bearing with eyes closed, eyes opened watching a referent and visual feed back, the ability of static balance showed no difference among the three groups.Conclusion:After paralysis patients were trained by the intellectual polymorphic balance measure and training system, their motor ability, balance ability and ADL were better than that of the ordinary balance training group. But when testing the static balance parameter, there showed no significant statistic difference. A larger sample and a longer training time were needed to work on the further research.Part Three The research on the application of brain-computer interface technology in rehabilitation of central nerve system diseaseObject:Discuss the prospect of the applications of the brain-computer interface system in the rehabilitation of those with dyskinesia by testing the brain electricity signals of the spinal cord injury patients and stroke patients and comparing with the healthy people.Method:Motor imaginary brain electricity signals of 5 healthy people,4 spinal cord injury patients and 2 stroke patients were tested, and the results were analyzed by computer.Result:All the 5 healthy people showed event related synchronization/event related desynchronization(ERS/ERD) phenomena in the aandβband in the motor related cortex, when they are doing motor imaginary.3 in 4 spinal cord injury patents showed the similar characters, and 1 showed obvious and stable character.2 stroke patients did not show meaningful characters.Conclusion:The spinal cord injury patients have the similar brain electricity character with the healthy people when they are experiencing motor imaginary, whilst the stroke patients do not show the similar brain electricity character with the healthy people in the affected hemisphere. These have provided evidences on the further research of the application of the brain computer interface technology in motor rehabilitation.