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Low vision affects dynamic stability of gait.

Identifieur interne : 001040 ( PubMed/Corpus ); précédent : 001039; suivant : 001041

Low vision affects dynamic stability of gait.

Auteurs : Ann Hallemans ; Els Ortibus ; Francoise Meire ; Peter Aerts

Source :

Gait & posture [ 1879-2219 ] ; 2010.

RBID : pubmed:20801658

English descriptors

KwdEn :
- Adolescent, Adult, Biomechanical Phenomena, Blindness (physiopathology), Female, Gait (physiology), Humans, Male, Postural Balance (physiology), Retrospective Studies, Vision, Low, Visual Acuity, Walking (physiology), Young Adult.
MESH :
- physiology : Gait, Postural Balance, Walking.
- physiopathology : Blindness.
- Adolescent, Adult, Biomechanical Phenomena, Female, Humans, Male, Retrospective Studies, Vision, Low, Visual Acuity, Young Adult.

Abstract

The objective of this study was to demonstrate specific differences in gait patterns between those with and without a visual impairment. We performed a biomechanical analysis of the gait pattern of young adults (27 ± 13 years old) with a visual impairment (n=10) in an uncluttered environment and compared it to the gait pattern of age matched controls (n=20). Normally sighted adults were tested in a full vision and no vision condition. Differences are found in gait between both groups and both situations. Adults with a visual impairment walked with a shorter stride length (1.14 ± 0.21m), less trunk flexion (4.55 ± 5.14°) and an earlier plantar foot contact at heel strike (1.83 ± 3.49°) than sighted individuals (1.39 ± 0.08 m; 11.07 ± 4.01°; 5.10 ± 3.53°). When sighted individuals were blindfolded (no vision condition) they showed similar gait adaptations as well as a slower walking speed (0.84 ± 0.28 ms(-1)), a lower cadence (96.88 ± 13.71 steps min(-1)) and limited movements of the hip (38.24 ± 6.27°) and the ankle in the saggital plane (-5.60 ± 5.07°) compared to a full vision condition (1.27 ± 0.13 ms(-1); 110.55 ± 7.09 steps min(-1); 45.32 ± 4.57°; -16.51 ± .59°). Results showed that even in an uncluttered environment vision is important for locomotion control. The differences between those with and without a visual impairment, and between the full vision and no vision conditions, may reflect a more cautious walking strategy and adaptive changes employed to use the foot to probe the ground for haptic exploration.

DOI: 10.1016/j.gaitpost.2010.07.018
PubMed: 20801658

Links to Exploration step

pubmed:20801658

Le document en format XML

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<author><name sortKey="Hallemans, Ann" sort="Hallemans, Ann" uniqKey="Hallemans A" first="Ann" last="Hallemans">Ann Hallemans</name>
<affiliation><nlm:affiliation>Research group of Functional Morphology, Department of Biology, University of Antwerp, Belgium. ann.hallemans@ua.ac.be</nlm:affiliation>
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<author><name sortKey="Ortibus, Els" sort="Ortibus, Els" uniqKey="Ortibus E" first="Els" last="Ortibus">Els Ortibus</name>
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<author><name sortKey="Meire, Francoise" sort="Meire, Francoise" uniqKey="Meire F" first="Francoise" last="Meire">Francoise Meire</name>
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<front><div type="abstract" xml:lang="en">The objective of this study was to demonstrate specific differences in gait patterns between those with and without a visual impairment. We performed a biomechanical analysis of the gait pattern of young adults (27 ± 13 years old) with a visual impairment (n=10) in an uncluttered environment and compared it to the gait pattern of age matched controls (n=20). Normally sighted adults were tested in a full vision and no vision condition. Differences are found in gait between both groups and both situations. Adults with a visual impairment walked with a shorter stride length (1.14 ± 0.21m), less trunk flexion (4.55 ± 5.14°) and an earlier plantar foot contact at heel strike (1.83 ± 3.49°) than sighted individuals (1.39 ± 0.08 m; 11.07 ± 4.01°; 5.10 ± 3.53°). When sighted individuals were blindfolded (no vision condition) they showed similar gait adaptations as well as a slower walking speed (0.84 ± 0.28 ms(-1)), a lower cadence (96.88 ± 13.71 steps min(-1)) and limited movements of the hip (38.24 ± 6.27°) and the ankle in the saggital plane (-5.60 ± 5.07°) compared to a full vision condition (1.27 ± 0.13 ms(-1); 110.55 ± 7.09 steps min(-1); 45.32 ± 4.57°; -16.51 ± .59°). Results showed that even in an uncluttered environment vision is important for locomotion control. The differences between those with and without a visual impairment, and between the full vision and no vision conditions, may reflect a more cautious walking strategy and adaptive changes employed to use the foot to probe the ground for haptic exploration.</div>
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<Abstract><AbstractText>The objective of this study was to demonstrate specific differences in gait patterns between those with and without a visual impairment. We performed a biomechanical analysis of the gait pattern of young adults (27 ± 13 years old) with a visual impairment (n=10) in an uncluttered environment and compared it to the gait pattern of age matched controls (n=20). Normally sighted adults were tested in a full vision and no vision condition. Differences are found in gait between both groups and both situations. Adults with a visual impairment walked with a shorter stride length (1.14 ± 0.21m), less trunk flexion (4.55 ± 5.14°) and an earlier plantar foot contact at heel strike (1.83 ± 3.49°) than sighted individuals (1.39 ± 0.08 m; 11.07 ± 4.01°; 5.10 ± 3.53°). When sighted individuals were blindfolded (no vision condition) they showed similar gait adaptations as well as a slower walking speed (0.84 ± 0.28 ms(-1)), a lower cadence (96.88 ± 13.71 steps min(-1)) and limited movements of the hip (38.24 ± 6.27°) and the ankle in the saggital plane (-5.60 ± 5.07°) compared to a full vision condition (1.27 ± 0.13 ms(-1); 110.55 ± 7.09 steps min(-1); 45.32 ± 4.57°; -16.51 ± .59°). Results showed that even in an uncluttered environment vision is important for locomotion control. The differences between those with and without a visual impairment, and between the full vision and no vision conditions, may reflect a more cautious walking strategy and adaptive changes employed to use the foot to probe the ground for haptic exploration.</AbstractText>
<CopyrightInformation>Copyright © 2010 Elsevier B.V. All rights reserved.</CopyrightInformation>
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Low vision affects dynamic stability of gait.

Low vision affects dynamic stability of gait.

Source :

English descriptors

Abstract

Links to Exploration step

Le document en format XML

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