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KMID : 0357220110230020001
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Journal of Korean Society Physical Therapy
2011 Volume.23 No. 2 p.1 ~ p.15
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Time Difference of the COP Displacement according Obstacle Height during Obstacle Crossing in Older Adults
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Park Seol
Kim Kyung
Park Ji-Won
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Abstract
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Purpose: This study examined the difference in the center of pressure (COP) displacement time in older adults according to the obstacle height during stance at each sub.phase when crossing obstacles.
Methods: Fifteen older adults were enrolled in this study ( years of age). The F-scan was used to measure the COP displacement time when crossing a 0, 10 and 40cm obstacle, and the stance phase was divided into 4 sub-phases according to the foot contact pattern.
Results: During the stance phase, the COP displacement time increased with increasing obstacle height. During the mid-stance, terminal stance and pre-swing except for the loading response, there were significant differences in the COP displacement time according to the obstacle height.
Conclusion: This study suggests that older adults show differences in the COP displacement time according to the stance sub-phase while crossing obstacles, and they use different mechanisms according the sub-phases to maintain balance during obstacle crossing.
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KEYWORD
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Center of pressure, Stance sub-phase, Obstacle crossing
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