Abstract

The sensitivity to detect a perturbation at low speed and small magnitude was evaluated to determine the physiological response differences that arise with age. Seven slow speeds ranging from 1.25 - 4.3 cm/s were chosen to evaluate the postural responses (electromyograms) and postural behavior (center of pressure) while subjects stood on a platform that was perturbed anteriorly. This preliminary study indicated that the muscle activation latency is longer in the older population, though both groups show an effect of speed. A significant difference does exist between groups at the intermediate speeds, but center of pressure data showed little differences between groups in regard to the behavior of the body's movements. Future tests will include larger subject groups, neurological deficit groups, and the addition of kinematic data to evaluate joint rotations.

Original languageEnglish (US)
Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
EditorsR.S. Leder
Pages1774-1776
Number of pages3
Volume2
StatePublished - 2003
EventA New Beginning for Human Health: Proceddings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Cancun, Mexico
Duration: Sep 17 2003Sep 21 2003

Other

OtherA New Beginning for Human Health: Proceddings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CountryMexico
CityCancun
Period9/17/039/21/03

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Keywords

  • Aging
  • EMG
  • Perturbation
  • Postural balance
  • Postural response
  • Slow platform movement

ASJC Scopus subject areas

  • Bioengineering

Cite this

Csavina, K. R., He, J., & Santello, M. (2003). Postural Response to Slow Perturbations: A Preliminary Study of Young vs. Elderly Subjects. In R. S. Leder (Ed.), Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (Vol. 2, pp. 1774-1776)