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Effect of Bilateral Arm Movement on Brain and Muscle Activity in Chronic Stroke Patients
J Korean Soc Phys Med 2018;13(1):1-9
Published online February 28, 2018;
© 2018 Korean Society of Physical Medicine.

Joo-Hee Park, PT⋅Sa-Gyeom Lee1†

Dept. of Physical Therapy, Graduate School, Yonsei University
1Dept. of Physical Therapy, Health and Food, Suwon Women’s University
Received September 13, 2017; Revised September 28, 2017; Accepted December 2, 2017.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
PURPOSE: This study investigated the neurophysiological and behavioral adaptation during one or both hands movement in chronic stroke patients.
METHODS: The study included sixteen hemiplegic stroke patients. Neurophysiological data (brain activation and muscle activation) were examined by electroencephalography (EEG) and electromyography (EMG), and behavioral adaptation was examined by wrist extension angle during wrist extension with one hand or both hands. Outcome variables of one hand or both hands were; mu rhythm of the EEG, EMG amplitude of wrist extensor and flexor muscles, and wrist angle of Myomotion 3D motion analysis.
RESULTS: Our results revealed that wrist extension angle was significant increased during both hands movement compared to one hand movement (p<.05). Furthermore, in affected sensorimotor area, there was significant increase in the brain activation during both hands movement compared to one hand movement (p<.05). However, there was no significant different between one hand and both hands movement in muscle activation (p>.05).
CONCLUSION: According to the findings of this experiment, bilateral arm movement improved brain activity on affected sensorimotor area and wrist extension angle. Therefore, we suggest that bilateral arm movement would positive effect on stroke rehabilitation in terms of increase in brain activation on affected motor area and wrist extension during bilateral arm movement.
Keywords : Bilateral arm movement, Electroencephalography, Muscle activation

February 2018, 13 (1)
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