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Postural Control in Elderly Subjects
Abstract
The postural stability of 23 subjects aged 85 years or over was studied with a force platform. The sensory function of the lower limbs was disturbed with small vibrators placed on both calf muscles and/or by placing the subjects on a platform covered with foam plastic. When compared with a group (n = 100) of 50-60-year-old subjects, the elderly subjects had significantly higher sway velocities even during nonperturbed conditions. The perturbation of muscle spindles with vibration and/or pressoreceptor function with foam plastic did not increase the postural instability of the elderly subjects. Visual deprivation had a significant effect on postural stability, and the visual influx contributed about 50% of the postural stability. Postural control is reduced as a result of loss of sensory cues of pressoreceptors and also deterioration in function of stretch reflexes initiated from muscle spindles. The very elderly seem to rely on visual control of posture; this is slow, which can be one reason for susceptibility to falls.
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Cited by
Goble, D. J., Coxon, J. P., Wenderoth, N., Van Impe, A., & Swinnen, S. P. (2009) · Neuroscience & Biobehavioral Reviews · doi:10.1016/j.neubiorev.2008.08.012 · Cited by 426
Reliability of COP-based postural sway measures and age-related differences
Lin, D., Seol, H., Nussbaum, M. A., & Madigan, M. L. (2008) · Gait & Posture · doi:10.1016/j.gaitpost.2008.01.005 · Cited by 416
Age-related changes in open-loop and closed-loop postural control mechanisms
Collins, J. J., De Luca, C. J., Burrows, A., & Lipsitz, L. A. (1995) · Experimental Brain Research · doi:10.1007/bf00231982 · Cited by 345
Surface height effects on postural control: A hypothesis for a stiffness strategy for stance
Carpenter, M. G., Frank, J. S., & Silcher, C. P. (1999) · Journal of Vestibular Research · doi:10.3233/ves-1999-9405 · Cited by 228
Metadata
- Authors
- PYYKKO, I., JANTTI, P., & AALTO, H.
- Venue
- Age and Ageing
- Publisher
- Oxford University Press (OUP)
- Published
- 1990
- Volume
- 19
- Issue
- 3
- Pages
- 215-221
- ISSN
- 0002-0729 (ISSN-L)
- 1468-2834
- OpenAlex
- W2050358494
- Cited by
- 239
- References
- 0
- FWCI
- 11.47
- Type
- journal article
- Language
- en
- Open access
- closed
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