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

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

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

정적 서기와 쪼그려 앉았다 서기 동작에서 고령자남녀의 자세 동요 비교

  • 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)
  • Published : 2008.11.01
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Abstract

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.

Keywords

References

  1. Tideiksaar, R., 'Falling in Old Age: Is Prevention and Treatment,' Springer, 1987
  2. Kennedy, T.E., et al., 'The prevention of falls in later life', Dan. Med. Bull, Vol. 34, pp1-24, 1987
  3. Lord SR., et al., 'An epidemiological study of falls in older community-dwelling women: the Rndwich falls and fractures study', Aust J Public Health, Vol. 17, pp240-245, 1993 https://doi.org/10.1111/j.1753-6405.1993.tb00143.x
  4. Lord SR, et al., 'An epidemiological study of falls in an elderly population', J Am Geriatr Soc, Vol.39, pp.1194-1200, 1991 https://doi.org/10.1111/j.1532-5415.1991.tb03574.x
  5. Cho C, et al., ' Detecting balance deficits in frequent fallers using clinical quantitative evaluation tools', J Am Geriatr Soc, Vol.46, pp.426-430, 1991
  6. Bohannon R., et al., 'Decrease in balance scores with ageing', Phys Ther, Vol.64, pp.1064-1070, 1984
  7. Satin RW, et al., 'The incidence of fall Injury events among the elderly in a defined population', Am J Epidemiol, Vol.131 , pp1028-1037, 1990 https://doi.org/10.1093/oxfordjournals.aje.a115594
  8. Anacker SL, et al., 'Influence of sensor inputs on standing balance in community-dwelling elders with a recent history of falling', Phys Ther, Vol.72, pp.575-584, 1992 https://doi.org/10.1093/ptj/72.8.575
  9. Witney SL et al., 'The association between observed gait instability and fal history in persons with vestibular dysfunction', J Vestib Res, Vol.10, pp99-105, 2000
  10. Teasdale N, et al., 'Postural sway characteristics of the elderly under normal and altered visual and support surface conditions', J Gerontol A Biol Sci Med Sci. Vol. 46, pp238-244, 1991 https://doi.org/10.1093/geronj/46.6.B238
  11. Sheldon JH, 'The effect of age on the control of sway', Gerontol Clin, Vol. 5, pp.129-138, 1963 https://doi.org/10.1159/000244784
  12. Prieto TE, et al., 'Measures of postural steadiness: differences between healthy young and elderly adults.', IEEE Trans Biomed Eng, Vol.43, pp956-966, 1996 https://doi.org/10.1109/10.532130
  13. Diana Abrahamova, et al., 'Age-related changes of human balance during queit stance', Physiological research ,2007
  14. Overstall PW, et al., 'Falls in the elderly related to postural imbalance.', BMJ. Vol.1, pp.261-264, 1977 https://doi.org/10.1136/bmj.1.6056.261
  15. Philippe P. Perrin, et al., 'Influence of visual control, conduction and central integration on static and dynamic balance in healthy older adults', J Gerontology, Vol. 43, pp.223-231, 1997 https://doi.org/10.1159/000213854
  16. Pai YC, et al., 'Static versus dynamic predictions of protective stepping following waist-pull perturbations in young and older adults', J Biomech, Vol.31, pp111-118, 1998
  17. Masui T, et al., 'Gender differences in platform measures of balance in rural community-dwelling elders', J Arch Gerontol Geriatr, Vol. 41, pp.201-209, 2005 https://doi.org/10.1016/j.archger.2005.02.003
  18. Leslie Wolfson, et al., 'Gender Differences in the Balance of Healthy Elderly as Demonstrated by Dynamic Posturography', Journal of Gerontology: Medical Sciences, Vol. 49, pp. 160-167, 1994 https://doi.org/10.1093/geronj/49.4.M160
  19. Maki, B.E., et al., 'A prospective study of postural balance and risk of falling in an ambulator and independent elderly population. J. Gerontol,' A Biol Sci. Med. Sci. Vol.49, pp.72-84, 1994
  20. E.C. Brant, et al. 'Gender differences in balance performance at the time of retirement', Clinical Biomechanics vol. 20, pp330-335, 2005 https://doi.org/10.1016/j.clinbiomech.2004.11.006
  21. McIlry, W.E., et al,. 'Preferred placement of the feet during quiet stance: development of a standardised foot placement for balance testing.' Clin. Biomech. Vol.12, pp.66-70, 1997 https://doi.org/10.1016/S0268-0033(96)00040-X
  22. Era, P., et al., 'Postural balance and self-reported functional ability in 75-year-old men and women: a cross-national comparative study', J. Am. Geriatr. Soc., Vol.45, pp.9-21, 1997
  23. Victora P. Panzer, et al., 'Biomechanical Assessment of Quiet Standing and Changes Associated With Aging', Arch Phys Med Rehabil, Vol. 76, pp.151-157, 1995 https://doi.org/10.1016/S0003-9993(95)80024-7
  24. Capbel AJ, et al., 'Risk factors for falls in a community-based prospective study of people 70 years and older', J Gerontol Vol.44, pp.12-17, 1989
  25. Cahalan TD, et al., 'Quantitative measurements of hip strength in different age groups', Clin Orthop Relat Res, Vol.246, pp.136-145, 1989
  26. Marjorie E. Johnson, et al., 'Age-Related Changes in Hp Abductor and Adductor Joint Torques', Arch Phys Med Rehabil Vol.85, pp.593-597, 2004 https://doi.org/10.1016/j.apmr.2003.07.022
  27. Raymarkers JA, et al., 'The assessment of body sway and the choice of the stability parameter(s)', Gait Posture Vol.21, pp.48-58, 2005 https://doi.org/10.1016/j.gaitpost.2003.11.006
  28. Baloh RW, et al., 'Posturography and balance problems in older people', J Am Geriatr Soc, Vo.43 pp.638-644. 1995 https://doi.org/10.1111/j.1532-5415.1995.tb07198.x