고령자 남녀와 20대 남녀에 있어서 다양한 등속수축중 최대 모멘트의 비교

Comparison of the Maximum Moment of Ankle Plantarflexors During Various Isokinetic Contractions in the Elderly Males and Females and Young Males and Females

  • 발행 : 2008.10.01

초록

In this paper, we investigated the maximum ankle joint plantarflexion moment(MPM) of young and elderly subjects during various modes of isokinetic contractions with special interest in the elderly females who were reported to have higher fall rate than the elderly males. Subjects include the young subjects(14 males: $22.7{\pm}2.5yrs$, 13 females: $20.5{\pm}1.3yrs$) and the elderly subjects(17 males: $65.8{\pm}10.5yrs$, 26 females: $71.4{\pm}5.2yrs$). The MPM was normalized by each subject's body weight. The MPM of elderly females was the weakest among the groups, particularly, at the eccentric contractions. The male-to-female ratio of MPM was greater in the elderly than in the young and the young-to-elderly ratio of MPM was greater in female than in male, both during the eccentric contractions. The result suggests that the decreased muscle force per body weight, especially at the eccentric contraction, may be one reason for the more frequent fall of the elderly female than the elderly male.

키워드

참고문헌

  1. Tideiksaar, R., "Falling in Old Age: Its Prevention and Treatment," Springer, 1987
  2. 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
  3. Suzukt T, et al., "Muscle power of the ankle flexors predicts functional performance in community-dwelling older women", J Am Geriatr Soc, Vol. 49, pp.1161-1167, 2001 https://doi.org/10.1046/j.1532-5415.2001.49232.x
  4. Caserotti, P, et al., "Contraction-specific differences in maximal muscle power during stretch shortening cycle movements in elderly males and females", J Appl Physiol, Europe, vol. 84, pp. 206-212, 2001 https://doi.org/10.1007/s004210170006
  5. Skelton DA, et al., "Explosive power and asymmetry in leg muscle function in frequent fallers and non-fallers aged over 65, " Age Ageing, vol.31, pp.119-125, 2002 https://doi.org/10.1093/ageing/31.2.119
  6. Judge JO, et al.,"Effects of age on the biomechanics and physiology of gait., Clin Geriatr Med, vol.12, pp.659-678, 1996
  7. Lindle RS, et al., "Age and gender comparisons of muscle strength in 654 women and men aged 20-93 yr", J Appl Physiol, vol. 83, pp.1581-1587, 1997 https://doi.org/10.1152/jappl.1997.83.5.1581
  8. Burnett RA, et al., "Co-activation of theantagonist muscle does not covary with steadiness in old adults", J Appl Physiol vol. 89, pp.61-71, 2000 https://doi.org/10.1152/jappl.2000.89.1.61
  9. Graves AE, et al., "Older adults use a unique strategy to lift inertial loads with the elbow Xexor muscles", J Neurophysiol vol. 83, pp.2030-2039, 2000 https://doi.org/10.1152/jn.2000.83.4.2030
  10. Serena F, et al., "Steadiness of quadriceps contractions in young and older adults with and without a history of falling", Eur J Appl Physiol vol. 100, pp.527-533, 2007 https://doi.org/10.1007/s00421-006-0245-2
  11. Roudsari BS, et al., "The acute medical care costs of fall-related injuries among the U.S. older adults", Injury vol.36, pp.1316-1322,2005 https://doi.org/10.1016/j.injury.2005.05.024