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KMID : 0978920080090020250
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Korean Journal of Clinical Geriatrics
2008 Volume.9 No. 2 p.250 ~ p.257
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Balance Control Effect of Electrical Noise Stimulation on Vibration Socks in Healthy Adult and Elderly People
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Yoo Ji-Sung
Park Dae-Sung
Chang Hyun-Jung
Kwon Tae-Kyu
Hwang Ji-Hye
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Abstract
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Background: To investigate whether using a self-developed vibration socks, attached to the feet and ankles, that give a sub-threshold vibration stimulus improves balance control abilities in young and old people according to the presence of visual compensation.
Methods: Subjects were composed of young people and old people they were given vibration socks to wear through which sub-threshold vibratory noise stimulation was given. Subjects stood on an unstable board and had to keep the center of pressure (COP) within a circle displayed on a monitor for 30 seconds. To evaluate the degree of disturbance in posture, the maintain time of the center of pressure within the circle, the area and distance of COP sway were used. The evaluation was conducted with and without vibratory noise stimulation, with and without visual feedback and with the eyes open and closed.
Results: When vibratory stimulations were given, young people showed not improve in postural balance at all visual condition. Old people showed a significant improve in postural balance in absence of visual feedback when the vibratory stimulation was present. In comparison of young people and old people, there was not significant difference of balance control.
Conclusion: In the presence of vibratory stimulation, there was an improvement in maintaining posture balance in old people in conditions of the absence of visual feedback. Therefore it can be concluded that vibratory stimulation can help maintain balance in dynamic conditions such as walking or day to day activities. Additional researches on patients that have difficulty in controlling postural balance,
are needed in the future.
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KEYWORD
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Vibration socks, Sub-threshold stimulation, Balance, Unstable board
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