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KMID : 1202320200130020012
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Brain & NeuroRehabilitation
2020 Volume.13 No. 2 p.12 ~ p.12
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Modulating Effects of Whole-body Vibration on Cortical Activity and Gait Function in Chronic Stroke Patients
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Lee A-Hee
Kim Hee-Goo
Kim Jin-Uk
Choi Dong-Sung
Jung Jae-Hwan
Lee Jung-Soo
Kim Yun-Hee
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Abstract
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Whole-body vibration exercise (WBVe) can provide proper somatosensory stimulation and improve muscle strength in stroke patients. This study investigated the effects of WBVe on gait function and cortical activity in patients with chronic stroke. Thirty stroke patients were randomly assigned to either the WBVe or the control group. The WBVe group received the vibration in a half-squat position for 5 minutes at an intensity of 20 Hz. The control group kept the same posture but did not receive the vibration. Cortical activity was investigated using functional near-infrared spectroscopy (fNIRS). Gait function was assessed by a 10-m walk test (10MWT), a timed up and go (TUG) test, a Fugl-Meyer Assessment, and a Tinetti Performance-Oriented Mobility Assessment (TPOMA). In group analysis of the fNIRS data, oxygenated hemoglobin concentration was significantly increased in the ipsilesional supplementary motor area, bilateral sensorimotor cortex, and contralesional prefrontal cortex in the WBVe group compared to the control group (p < 0.05). Functional assessment demonstrated a significant interaction between time and group for the 10MWT and TUG test, suggesting that the WBVe group demonstrated meaningful improvement after intervention (p < 0.05). These results suggested that WBVe modulated the cerebral cortical activities and resulted in improvement of gait function in chronic stroke patients.
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KEYWORD
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Vibration, Near-infrared spectroscopy, Cortical excitability, Stroke, Gait
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