Dynamic Performance of Vibration Induced Anterior-Posterior Sway during Upright Posture in Normal Subjects
Magnusson, M LU
and Johansson, R
LU
(1989)
In Acta Oto-Laryngologica
468(S468).
p.227-230
- Abstract
Human postural control works as a dynamic feedback control system. The dynamic performance of postural control for anterior-posterior movements during upright posture are defined by three parameters. These parameters reflect the stiffness, the damping and the swiftness of a response to an induced perturbation. In the present study 23 normal subjects were investigated. Both with open and closed eyes, there was a negative correlation between swiftness and stiffness. With open eyes there was also a weak correlation between swiftness and damping. When the subjects were tested with open eyes there was a prominent and highly significant increase of stiffness and a reduction of swiftness of the responses. It was found that proprioceptive... (More)
Human postural control works as a dynamic feedback control system. The dynamic performance of postural control for anterior-posterior movements during upright posture are defined by three parameters. These parameters reflect the stiffness, the damping and the swiftness of a response to an induced perturbation. In the present study 23 normal subjects were investigated. Both with open and closed eyes, there was a negative correlation between swiftness and stiffness. With open eyes there was also a weak correlation between swiftness and damping. When the subjects were tested with open eyes there was a prominent and highly significant increase of stiffness and a reduction of swiftness of the responses. It was found that proprioceptive information from the calf muscles contributes in postural control of movements up to 1 Hz and visual information is important for movements up to 0.05 Hz. The present findings suggest that postural control changes dynamic strategies depending on the available sensory feedback.
(Less)
- author
- Magnusson, M
LU
and Johansson, R
LU
- organization
- publishing date
- 1989
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Adolescent, Adult, Feedback, Humans, Middle Aged, Postural Balance, Posture, Vibration, Vision, Ocular, Journal Article
- in
- Acta Oto-Laryngologica
- volume
- 468
- issue
- S468
- pages
- 4 pages
- publisher
- Taylor & Francis
- external identifiers
-
- scopus:0024805018
- pmid:2635508
- ISSN
- 1651-2251
- DOI
- 10.3109/00016488909139051
- language
- English
- LU publication?
- yes
- id
- 760a8e9e-2d5a-4b54-9301-828fe93f4919
- date added to LUP
- 2017-05-03 12:56:27
- date last changed
- 2024-01-13 20:00:36
@article{760a8e9e-2d5a-4b54-9301-828fe93f4919,
abstract = {{<p>Human postural control works as a dynamic feedback control system. The dynamic performance of postural control for anterior-posterior movements during upright posture are defined by three parameters. These parameters reflect the stiffness, the damping and the swiftness of a response to an induced perturbation. In the present study 23 normal subjects were investigated. Both with open and closed eyes, there was a negative correlation between swiftness and stiffness. With open eyes there was also a weak correlation between swiftness and damping. When the subjects were tested with open eyes there was a prominent and highly significant increase of stiffness and a reduction of swiftness of the responses. It was found that proprioceptive information from the calf muscles contributes in postural control of movements up to 1 Hz and visual information is important for movements up to 0.05 Hz. The present findings suggest that postural control changes dynamic strategies depending on the available sensory feedback.</p>}},
author = {{Magnusson, M and Johansson, R}},
issn = {{1651-2251}},
keywords = {{Adolescent; Adult; Feedback; Humans; Middle Aged; Postural Balance; Posture; Vibration; Vision, Ocular; Journal Article}},
language = {{eng}},
number = {{S468}},
pages = {{227--230}},
publisher = {{Taylor & Francis}},
series = {{Acta Oto-Laryngologica}},
title = {{Dynamic Performance of Vibration Induced Anterior-Posterior Sway during Upright Posture in Normal Subjects}},
url = {{http://dx.doi.org/10.3109/00016488909139051}},
doi = {{10.3109/00016488909139051}},
volume = {{468}},
year = {{1989}},
}