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Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication

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Published on: December 11, 2013

Low vision affects dynamic stability of gait.

Ann Hallemans¹, Els Ortibus, Francoise Meire

¹Research group of Functional Morphology, Department of Biology, University of Antwerp, Belgium. ann.hallemans@ua.ac.be

|August 31, 2010

Summary

Individuals with visual impairments exhibit distinct gait patterns, including shorter strides and reduced trunk movement. Even sighted individuals show altered walking when blindfolded, highlighting vision's role in locomotion.

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Area of Science:

Biomechanics
Human locomotion
Sensory neuroscience

Background:

Visual impairment significantly impacts mobility and spatial navigation.
Gait analysis is crucial for understanding motor control and identifying compensatory strategies.

Purpose of the Study:

To investigate and quantify specific gait pattern differences between visually impaired and normally sighted adults.
To compare gait parameters in normally sighted individuals under full vision and no vision conditions.

Main Methods:

Biomechanical analysis of gait patterns in young adults.
Comparison between a group with visual impairment (n=10) and age-matched controls (n=20).
Testing normally sighted adults in both full vision and no vision (blindfolded) conditions in an uncluttered environment.

Main Results:

Visually impaired adults demonstrated shorter stride length, less trunk flexion, and earlier foot contact at heel strike compared to sighted controls.
When blindfolded, sighted individuals exhibited slower walking speed, lower cadence, and reduced hip/ankle movement.
These adaptations in the no vision condition mirrored some changes seen in the visually impaired group.

Conclusions:

Vision is essential for effective locomotion control, even in simple environments.
Gait modifications in visually impaired individuals and sighted individuals without vision suggest a more cautious walking strategy.
The foot may be utilized for haptic exploration to compensate for the lack of visual input during locomotion.