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Functional Electric Stimulation-assisted Biofeedback Therapy System for Chronic Hemiplegic Upper Extremity Function  

Kim, Yeung Ki (Leaders Rehabilitation Center)
Song, Jun Chan (Department of Physical Therapy, Daegu Health College)
Choi, Jae Won (Department of Physical Therapy, Kyungbuk College)
Kim, Jang Hwan (Department of Prosthetics and Orthotics, Hanseo University)
Hwang, Yoon Tae (Department of Physical Therapy, Gangneung Yeongdong College)
Publication Information
The Journal of Korean Physical Therapy / v.24, no.6, 2012 , pp. 409-413 More about this Journal
Abstract
Purpose: Rehabilitative devices are used to enhance sensorimotor training protocols, for improvement of motor function in the hemiplegic limb of patients who have suffered a stroke. Sensorimotor integration feedback systems, included with these devices, are very good therapeutic frameworks. We applied this approach using electrical stimulation in stroke patients and examined whether a functional electric stimulation-assisted biofeedback therapy system could improve function of the upper extremity in chronic hemiplegia. Methods: A prototype biofeedback system was used by six subjects to perform a set of tasks with their affected upper extremity during a 30-minute session for 20 consecutive working days. When needed for a grasping or releasing movement of objects, the functional electrical stimulation (FES) stimulated the wrist and finger flexor or extensor and assisted the patients in grasping or releasing the objects. Kinematic data provided by the biofeedback system were acquired. In addition, clinical performance scales and activity of daily living skills were evaluated before and after application of a prototype biofeedback system. Results: Our findings revealed statistically significant gradual improvement in patients with stroke, in terms of kinematic and clinical performance during the treatment sessions, in terms of manual function test and the Purdue pegboard. However, no significant difference of the motor activity log was found. Conclusion: Hemiplegic upper extremity function of a small group of patients with chronic hemiparesis was improved through two weeks of training using the FES-assisted biofeedback system. Further research into the use of biofeedback systems for long-term clinical improvement will be needed.
Keywords
Electric stimulation; Biofeedback; Hemiplegia; Rehabilitation;
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