Hemiparesis is one of the most common consequences of stroke. Advanced rehabilitation techniques are essential for restoring motor function in hemiplegic patients. Functional electrical stimulation applied to the affe...Hemiparesis is one of the most common consequences of stroke. Advanced rehabilitation techniques are essential for restoring motor function in hemiplegic patients. Functional electrical stimulation applied to the affected limb based on myoelectric signal from the unaffected limb is a promising therapy for hemiplegia. In this study, we developed a prototype system for evaluating this novel functional electrical stimulation-control strategy. Based on surface electromyography and a vector machine model, a self-administered, muki-movement, force-modulation functional electrical stimulation-prototype system for hemiplegia was implemented. This paper discusses the hardware design, the algorithm of the system, and key points of the self-oscillation-prone system. The experimental results demonstrate the feasibility of the prototype system for further clinical trials, which is being conducted to evaluate the efficacy of the proposed rehabilitation technique.展开更多
Patients with complete spinal cord injury retain the potential for volitional muscle activity in muscles located below the spinal injury level.However,because of prolonged inactivity,initial attempts to activate these...Patients with complete spinal cord injury retain the potential for volitional muscle activity in muscles located below the spinal injury level.However,because of prolonged inactivity,initial attempts to activate these muscles may not effectively engage any of the remaining neurons in the descending pathway.A previous study unexpectedly found that a brief clinical round of passive activity significantly increased volitional muscle activation,as measured by surface electromyography.In this study,we further explored the effect of passive activity on surface electromyographic signals during volitional control tasks among individuals with complete spinal cord injury.Eleven patients with chronic complete thoracic spinal cord injury were recruited.Surface electromyography data from eight major leg muscles were acquired and compared before and after the passive activity protocol.The results indicated that the passive activity led to an increased number of activated volitional muscles and an increased frequency of activation.Although the cumulative root mean square of surface electromyography amplitude for volitional control of movement showed a slight increase after passive activity,the difference was not statistically significant.These findings suggest that brief passive activity may enhance the ability to initiate volitional muscle activity during surface electromyography tasks and underscore the potential of passive activity for improving residual motor control among patients with motor complete spinal cord injury.展开更多
目的:观察助力电刺激训练对脑性瘫痪(脑瘫)患儿核心稳定的疗效。方法:从2011年11月—2012年9月在上海交通大学医学院附属新华医院康复医学科就诊的脑瘫患儿中选择19例痉挛型脑瘫患儿,按就诊顺序分为2组,观察组10例接受包括助力电刺激在...目的:观察助力电刺激训练对脑性瘫痪(脑瘫)患儿核心稳定的疗效。方法:从2011年11月—2012年9月在上海交通大学医学院附属新华医院康复医学科就诊的脑瘫患儿中选择19例痉挛型脑瘫患儿,按就诊顺序分为2组,观察组10例接受包括助力电刺激在内的康复治疗,对照组9例接受常规康复治疗。患儿入组后分别于治疗前、治疗3个月后采用粗大运动功能量表(gross motor function measure,GMFM88)和表面肌电图仪对患儿进行评估,分析脑瘫患儿治疗前后粗大运动功能量表中B区(坐位)、D区(站立位)、E区(行走、跑和跳)及腹直肌、竖脊肌表面肌电信号均方根值(RMS)的变化。结果:观察组、对照组患儿粗大运动功能(GMFM88、B、D、E区)及腹直肌RMS值、竖脊肌RMS值治疗前差异无显著性意义(P>0.05)。康复治疗3个月后,观察组GMFM88、B、D、E区粗大运动评分、腹直肌RMS值、竖脊肌RMS值显著高于治疗前(P<0.01),对照组GMFM88、B、D、E区粗大运动评分、腹直肌RMS值、竖脊肌RMS值高于治疗前(P<0.05)。观察组治疗后GMFM88、B、D、E区粗大运动评分、腹直肌RMS值、竖脊肌RMS高于对照组,差异有显著性意义(P<0.05)。结论:助力电刺激训练有助于改善脑瘫患儿的核心稳定性。展开更多
基金supported by the National Natural Science Foundation of China,No.90307013,90707005a grant from the Science&Technology Pillar Program of Jiangsu Province in China,No.BE2013706
文摘Hemiparesis is one of the most common consequences of stroke. Advanced rehabilitation techniques are essential for restoring motor function in hemiplegic patients. Functional electrical stimulation applied to the affected limb based on myoelectric signal from the unaffected limb is a promising therapy for hemiplegia. In this study, we developed a prototype system for evaluating this novel functional electrical stimulation-control strategy. Based on surface electromyography and a vector machine model, a self-administered, muki-movement, force-modulation functional electrical stimulation-prototype system for hemiplegia was implemented. This paper discusses the hardware design, the algorithm of the system, and key points of the self-oscillation-prone system. The experimental results demonstrate the feasibility of the prototype system for further clinical trials, which is being conducted to evaluate the efficacy of the proposed rehabilitation technique.
基金supported by the Fundamental Research Funds for Central Public Welfare Research Institute,No.2020CZ-5(to WS and GS)the National Natural Science Foundation of China,No.31970970(to JSR)Fundamental Research Funds for the Central Universities,No.YWF-23-YG-QB-010(to JSR)。
文摘Patients with complete spinal cord injury retain the potential for volitional muscle activity in muscles located below the spinal injury level.However,because of prolonged inactivity,initial attempts to activate these muscles may not effectively engage any of the remaining neurons in the descending pathway.A previous study unexpectedly found that a brief clinical round of passive activity significantly increased volitional muscle activation,as measured by surface electromyography.In this study,we further explored the effect of passive activity on surface electromyographic signals during volitional control tasks among individuals with complete spinal cord injury.Eleven patients with chronic complete thoracic spinal cord injury were recruited.Surface electromyography data from eight major leg muscles were acquired and compared before and after the passive activity protocol.The results indicated that the passive activity led to an increased number of activated volitional muscles and an increased frequency of activation.Although the cumulative root mean square of surface electromyography amplitude for volitional control of movement showed a slight increase after passive activity,the difference was not statistically significant.These findings suggest that brief passive activity may enhance the ability to initiate volitional muscle activity during surface electromyography tasks and underscore the potential of passive activity for improving residual motor control among patients with motor complete spinal cord injury.
文摘目的:观察助力电刺激训练对脑性瘫痪(脑瘫)患儿核心稳定的疗效。方法:从2011年11月—2012年9月在上海交通大学医学院附属新华医院康复医学科就诊的脑瘫患儿中选择19例痉挛型脑瘫患儿,按就诊顺序分为2组,观察组10例接受包括助力电刺激在内的康复治疗,对照组9例接受常规康复治疗。患儿入组后分别于治疗前、治疗3个月后采用粗大运动功能量表(gross motor function measure,GMFM88)和表面肌电图仪对患儿进行评估,分析脑瘫患儿治疗前后粗大运动功能量表中B区(坐位)、D区(站立位)、E区(行走、跑和跳)及腹直肌、竖脊肌表面肌电信号均方根值(RMS)的变化。结果:观察组、对照组患儿粗大运动功能(GMFM88、B、D、E区)及腹直肌RMS值、竖脊肌RMS值治疗前差异无显著性意义(P>0.05)。康复治疗3个月后,观察组GMFM88、B、D、E区粗大运动评分、腹直肌RMS值、竖脊肌RMS值显著高于治疗前(P<0.01),对照组GMFM88、B、D、E区粗大运动评分、腹直肌RMS值、竖脊肌RMS值高于治疗前(P<0.05)。观察组治疗后GMFM88、B、D、E区粗大运动评分、腹直肌RMS值、竖脊肌RMS高于对照组,差异有显著性意义(P<0.05)。结论:助力电刺激训练有助于改善脑瘫患儿的核心稳定性。
