전기학회논문지 (The Transactions of The Korean Institute of Electrical Engineers)

  • 제57권11호
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  • Pages.2131-2137
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  • 2008
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  • 1975-8359(pISSN)
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  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

정적 서기와 쪼그려 앉았다 서기 동작에서 고령자남녀의 자세 동요 비교

Comparison of Postural Sway in the Elderly Males and Females during Quiet Standing and Squat-and-Stand Movement

  • 김지원 (건국대 대학원 의학공학과) ;
  • 김다혜 (건국대학교 의학공학부) ;
  • 문기욱 (건국대 대학원 의학공학부) ;
  • 엄광문 (건국대학교 의공학 실용기술연구소) ;
  • 남정숙 (충주시 보건소 방문건강관리) ;
  • 김요한 (건국대학교병원 흉부외과) ;
  • 홍정화 (고려대학교 제어계측공학과) ;
  • 박병규 (고려대)
  • 발행 : 2008.11.01
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초록

In this paper, COP (center of pressure) during quiet standing and squat-and-stand movement was analyzed to compare the postural control of young and elderly subjects with special interest in the elderly females who were reported to have higher fall rate than the elderly males. Subjects include the young subjects (10 males: $21.8{\pm}2.6yrs$, 10 females: $20.4{\pm}0.3yrs$) and the elderly subjects (8 males: $75.5{\pm}4yrs$, 8 females: $72.3{\pm}3.5yrs$). Analysis parameters were the mean of the distance between the instantaneous COP and the average COP (COP distance) and the mean of the COP movement velocity (COP velocity) in both AP (anterio-posterior) and ML (media-lateral) directions. During quiet standing, the COP distance in ML direction of elderly females was significantly greater than that of elderly males and the COP velocity of elderly females in both ML and AP direction were significantly greater than those of all the other groups. During squat and stand movement, the COP distance of elderly females was not significantly different with that of the elderly males. However, the COP velocity of elderly females was significantly greater than that of all the other groups. The large lateral weight shift (COP distance) of elderly females during quiet standing may explain their greater fall rate. However, this does not apply to squat-and stand movement. In contrast, COP velocity results show that the elderly females' COP is rapidly trembling compared to that of elderly males during both quiet standing and squat and-stand movement. This results suggest that rapid trembling or postural sway may reflect the reduced postural control ability and the risk of falling.

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참고문헌

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