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The Role of Visual Attention and Environmental Complexity in Real-world Mobility for People With Lower Limb Amputation
Sponsor: Virginia Commonwealth University
Summary
Despite high medical expenses (\>$500K/patient), mobility improvements achieved during rehabilitation for people with lower limb amputation (LLA) fail to translate into improved real-world outcomes. Even with advances in prosthesis technology enabling faster gait speed, greater walking endurance, and improved mobility confidence, people with LLA report persistent dissatisfaction with real-world mobility, limited ability to walk in the community, and difficulty achieving recommended physical activity levels. Real-world walking requires thinking and moving simultaneously (e.g., cognitive-motor dual-tasking), visually attending to the environment, and navigating varying terrain. In contrast, clinical mobility assessments are usually performed without additional visual or cognitive demands, in controlled environments, and on level surfaces. Current clinical tools used to assess ambulation progression during rehabilitation do not adequately assess these changes in people who have experienced LLA.
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
OBSERVATIONAL
Enrollment
30
Start Date
2025-10-25
Completion Date
2027-05-31
Last Updated
2026-09-21
Healthy Volunteers
No
Conditions
Interventions
Comprehensive assessment of walking patterns and functional mobility
Assessment of accelerometry: Daily duration (minutes) of sitting, standing, stepping, Daily step count, Daily walking bouts stepping cadence, Timed Up and Go and Two-minute Walk Test
Comprehensive assessment of eye movements during walking
Comprehensive assessment of eye movements during walking including Target Fixation Time (seconds; %) and Number of fixations
Questionnaire Assessments completed
The following assessments will be completed: World health organization disability assessment schedule 2.0 (WHODAS), and Activities Specific Balance Confidence Scale.
Locations (1)
Virginia Commonwealth University
Richmond, Virginia, United States