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KMID : 0828520010050020159
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Journal of the Korean Geriatrics Society
2001 Volume.5 No. 2 p.159 ~ p.166
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Motion-stress Effect on the Body Centroid, Such as Head-Shaking and an Alteration of the Body Position in Old Subjects
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Lee Geun-Ho
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Abstract
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Background : It is well known that many patients with vertigo become vertiginous when an alteration of the body position occurs while either head-shaking or after standing up. Posturography conducted with those patients when standing still is thus not always successful in detecting abnormal symptoms However, such abnormalities can be easily detected when the patients are subjected to motion-stress, such as head- shaking or alterations of the body position. The effect of such motion-stress on the disturbance of the centroid in normal individuals has yet to be clarified. Methods: In this study, posturography was conducted on 60 normal subjects who were subjected to motion-stress in the manner mentioned above and the results of this test were then compared with the findings of a conventional test. Results : Through this comparison no increase in the imbalance, as a result of the applied motion-stress, was observed for the X distance(XD), Y distance(YD) and Length(LNG). However, a significant increase in the imbalance was found for the XD and LNG in old subjects. Conclusion : Therefore, motion-stress, such as head-shaking or alterations of the body position can be helpful in detecting vertiginous symptoms in vertigo patients. But in the elderly patients, the merit of above stimuli during the test should be yet clarified.
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KEYWORD
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Vertigo, Dynamic posturography, Center of gravity
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