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Adaptation of multi-joint movements during postural disturbances.

Johansson, Rolf LU ; Fransson, Per-Anders LU and Hjerpe, M (2004) Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2004 In Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference 1. p.149-152
Abstract
The objective was to investigate the adaptation ofthe multi-segmented body movements induced over time byvibratory proprioceptive stimulation of the calf muscles and by galvanic vestibular stimulation. Twelve normal subjects were with eyes open or eyes closed exposed to vibratory stimulation of two different amplitudes and frequencies, or to simultaneously applied galvanic and vibratory stimulation. Multi-input multi-output system identification methods as well as quantitative analysis were applied to the biomechanical experimental data of anteroposterior and lateral body movements and torques induced towards the ground. The immediate adaptive response to the stimulation onset was that the subjects adopted a more rigid posture with... (More)
The objective was to investigate the adaptation ofthe multi-segmented body movements induced over time byvibratory proprioceptive stimulation of the calf muscles and by galvanic vestibular stimulation. Twelve normal subjects were with eyes open or eyes closed exposed to vibratory stimulation of two different amplitudes and frequencies, or to simultaneously applied galvanic and vibratory stimulation. Multi-input multi-output system identification methods as well as quantitative analysis were applied to the biomechanical experimental data of anteroposterior and lateral body movements and torques induced towards the ground. The immediate adaptive response to the stimulation onset was that the subjects adopted a more rigid posture with coordinated movements of primarily head-shoulder and headhip body segments. The body-movement amplitudes at allmeasured sites as well as the amplitudes of the ground support forces decreased over time as a result of another, somewhat slower adaptation process. The subjects required more time to adapt to a rigid movement pattern when the subjects were simultaneously exposed to both galvanic and vibratorystimulation. Moreover, the accuracy of the MIMO model andcorrelation analysis between measured torque variance andhead; shoulder; hip and knee movement variance suggests thatforce platform recordings reflect both in anteroposterior and lateral direction the body movements at these sites. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
correlation analysis, calf muscles, vibrations, muscle physiological models, medical signal processing, vibratory proprioceptive stimulation, torque variance, postural disturbances, multi-segmented body movements, multi-joint movements, biomechanics, anteroposterior, head-hip body segment, galvanic vestibular stimulation, head-shoulder segment, MIMO model, lateral body movements
in
Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference
volume
1
pages
149 - 152
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2004
external identifiers
  • wos:000225461800039
  • scopus:11044237535
ISSN
1557-170X
ISBN
0-7803-8439-3
DOI
10.1109/IEMBS.2004.1403113
language
English
LU publication?
yes
id
15ed408d-a733-4793-8ec4-ca1f1c8d8393 (old id 165951)
alternative location
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=17271627&dopt=Abstract
date added to LUP
2007-08-10 12:15:05
date last changed
2017-01-01 06:51:53
@inproceedings{15ed408d-a733-4793-8ec4-ca1f1c8d8393,
  abstract     = {The objective was to investigate the adaptation ofthe multi-segmented body movements induced over time byvibratory proprioceptive stimulation of the calf muscles and by galvanic vestibular stimulation. Twelve normal subjects were with eyes open or eyes closed exposed to vibratory stimulation of two different amplitudes and frequencies, or to simultaneously applied galvanic and vibratory stimulation. Multi-input multi-output system identification methods as well as quantitative analysis were applied to the biomechanical experimental data of anteroposterior and lateral body movements and torques induced towards the ground. The immediate adaptive response to the stimulation onset was that the subjects adopted a more rigid posture with coordinated movements of primarily head-shoulder and headhip body segments. The body-movement amplitudes at allmeasured sites as well as the amplitudes of the ground support forces decreased over time as a result of another, somewhat slower adaptation process. The subjects required more time to adapt to a rigid movement pattern when the subjects were simultaneously exposed to both galvanic and vibratorystimulation. Moreover, the accuracy of the MIMO model andcorrelation analysis between measured torque variance andhead; shoulder; hip and knee movement variance suggests thatforce platform recordings reflect both in anteroposterior and lateral direction the body movements at these sites.},
  author       = {Johansson, Rolf and Fransson, Per-Anders and Hjerpe, M},
  booktitle    = {Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference},
  isbn         = {0-7803-8439-3},
  issn         = {1557-170X},
  keyword      = {correlation analysis,calf muscles,vibrations,muscle physiological models,medical signal processing,vibratory proprioceptive stimulation,torque variance,postural disturbances,multi-segmented body movements,multi-joint movements,biomechanics,anteroposterior,head-hip body segment,galvanic vestibular stimulation,head-shoulder segment,MIMO model,lateral body movements},
  language     = {eng},
  pages        = {149--152},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  title        = {Adaptation of multi-joint movements during postural disturbances.},
  url          = {http://dx.doi.org/10.1109/IEMBS.2004.1403113},
  volume       = {1},
  year         = {2004},
}