Clinical Research Directory
Browse clinical research sites, groups, and studies.
Obstacle Negotiation in Older People With and Without Vision Impairment
Sponsor: Indiana University
Summary
Falls are common among people with vision impairment and can lead to devastating health consequences. Understanding the functions of vision and how the visual characteristics of obstacles in the walking path impact the gait of people with vision impairment is necessary to create strategies to prevent falls in this population. The purpose of this study is to determine how adults with vision impairment change their gait behavior when stepping over obstacles that vary in height and contrast to the ground. We will then determine the mechanisms of gaze behavior that correlate to the gait behavior.
Official title: Impact of Stepping Over Obstacles of Different Contrast and Height on Gait and Eye Movements in Older Adults With and Without Vision Impairment
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
200
Start Date
2023-04-14
Completion Date
2028-12-31
Last Updated
2025-11-13
Healthy Volunteers
Yes
Conditions
Interventions
Obstacle characteristics
In the walking trials, when an obstacle is present, the obstacle height and obstacle contrast level will be varied across the trial repetitions. Each participant will be exposed to obstacles of two heights: the first will be 1 centimeter in height, and the second will be approximately 20% of the subject's leg length (ranging in physical height between 15 - 22 centimeters to cover a range of leg lengths in the population). Obstacles (of both heights) will also be painted such that their measured luminance (or contrast) level against the floor luminance is varied. High contrast obstacles will have ≥80% Michelson contrast and low contrast obstacles will have ≤30% Michelson contrast.
Locations (1)
Indiana University
Bloomington, Indiana, United States