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Acute alcohol intoxication impairs segmental body alignment in upright standing.

Hafström, Anna LU ; Patel, Mitesh LU ; Modig, Fredrik LU ; Magnusson, Måns LU and Fransson, Per-Anders LU (2014) In Journal of Vestibular Research 24(4). p.297-304
Abstract
Balance control when standing upright is a complex process requiring input from several partly independent mechanisms such as coordination, feedback and feedforward control, and adaptation. Acute alcohol intoxication from ethanol is recognized as a major contributor to accidental falls requiring medical care. This study aimed to investigate if intoxication at 0.06 and 0.10% blood alcohol concentration affected body alignment. Mean angular positions of the head, shoulder, hip, and knee were measured with 3D-motion analysis and compared with the ankle position in 25 healthy adults during standing with or without perturbations, and with eyes open or closed. Alcohol intoxication had significant effects on body alignment during perturbed and... (More)
Balance control when standing upright is a complex process requiring input from several partly independent mechanisms such as coordination, feedback and feedforward control, and adaptation. Acute alcohol intoxication from ethanol is recognized as a major contributor to accidental falls requiring medical care. This study aimed to investigate if intoxication at 0.06 and 0.10% blood alcohol concentration affected body alignment. Mean angular positions of the head, shoulder, hip, and knee were measured with 3D-motion analysis and compared with the ankle position in 25 healthy adults during standing with or without perturbations, and with eyes open or closed. Alcohol intoxication had significant effects on body alignment during perturbed and unperturbed stance, and on adaptation to perturbations. It induced a significantly more posterior alignment of the knees and shoulders, and a tendency for a more posterior and left deviated head alignment in perturbed stance than when sober. The impact of alcohol intoxication was most apparent on the knee alignment, where availability of visual information deteriorated the adaptation to perturbations. Thus, acute alcohol intoxication resulted in inadequate balance control strategies with increased postural rigidity and impaired adaptation to perturbations. These factors probably contribute to the increased risk of falling when intoxicated with alcohol. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Vestibular Research
volume
24
issue
4
pages
297 - 304
publisher
IOS Press
external identifiers
  • pmid:25095774
  • wos:000342651400005
  • scopus:84947924489
ISSN
1878-6464
DOI
10.3233/VES-140513
language
English
LU publication?
yes
id
3de32a82-62da-4860-b87c-f1592529fca5 (old id 4615557)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/25095774?dopt=Abstract
date added to LUP
2014-09-03 22:02:35
date last changed
2017-01-01 03:22:37
@article{3de32a82-62da-4860-b87c-f1592529fca5,
  abstract     = {Balance control when standing upright is a complex process requiring input from several partly independent mechanisms such as coordination, feedback and feedforward control, and adaptation. Acute alcohol intoxication from ethanol is recognized as a major contributor to accidental falls requiring medical care. This study aimed to investigate if intoxication at 0.06 and 0.10% blood alcohol concentration affected body alignment. Mean angular positions of the head, shoulder, hip, and knee were measured with 3D-motion analysis and compared with the ankle position in 25 healthy adults during standing with or without perturbations, and with eyes open or closed. Alcohol intoxication had significant effects on body alignment during perturbed and unperturbed stance, and on adaptation to perturbations. It induced a significantly more posterior alignment of the knees and shoulders, and a tendency for a more posterior and left deviated head alignment in perturbed stance than when sober. The impact of alcohol intoxication was most apparent on the knee alignment, where availability of visual information deteriorated the adaptation to perturbations. Thus, acute alcohol intoxication resulted in inadequate balance control strategies with increased postural rigidity and impaired adaptation to perturbations. These factors probably contribute to the increased risk of falling when intoxicated with alcohol.},
  author       = {Hafström, Anna and Patel, Mitesh and Modig, Fredrik and Magnusson, Måns and Fransson, Per-Anders},
  issn         = {1878-6464},
  language     = {eng},
  number       = {4},
  pages        = {297--304},
  publisher    = {IOS Press},
  series       = {Journal of Vestibular Research},
  title        = {Acute alcohol intoxication impairs segmental body alignment in upright standing.},
  url          = {http://dx.doi.org/10.3233/VES-140513},
  volume       = {24},
  year         = {2014},
}