Organizational Unit:

Center for Inclusive Design and Innovation

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https://hdl.handle.net/1853/70766

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Organizational Unit

College of Design

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https://finding-aids.library.gatech.edu/agents/corporate_entities/1116

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Publication Search Results

Now showing 1 - 10 of 20

Mobility Metrics for Manual Wheelchair Use in Everyday Life

(Georgia Institute of Technology, 2010-06) Lopez, Ricardo A. ; Sonenblum, Sharon Eve ; Sprigle, Stephen

In this study, a method for the robust detection of manual wheelchair movement with accelerometer-based data logging is used to obtain metrics of wheelchair mobility that complement mean- and total-distance-only based measurements. It is found that these metrics, that include distance, time and number of activity bouts, provide better understanding of everyday use of manual wheelchairs by shedding more light into how users operate their wheelchairs in their daily lives.
Blood Flow and Pressure Changes That Occur With Tilt-in-Space

(Georgia Institute of Technology, 2010-06) Sonenblum, Sharon Eve ; Sprigle, Stephen

The objective of this study was to evaluate the biomechanical responses to tilt in persons with SCI. Changes in blood flow and loading at the ischial tuberosities (ITs) across different amounts of tilt were measured with Laser Doppler flowmetry and interface pressure. Pressure reduction at the IT was not present at 15°, but did occur with tilts to 30° and greater. Unlike pressure, blood flow increased with all tilts from an upright position. Only 4 of 11 participants had a considerable increase (≥10%) in blood flow at 30° tilt, whereas 9 participants did during maximum tilt (i.e., 45°-60°). Based on the results of this study, tilting for pressure reliefs as far as the seating system permits is recommended to maximize the potential for significant blood flow increases and pressure relief. The use of interim small tilts is also supported, as they also provide some benefit.
Draft of Recommendations for Training and Use of Power Tilt systems

(Georgia Institute of Technology, 2010) Maurer, Chris ; Sonenblum, Sharon Eve
Blood Flow and Pressure Changes That Occur With Tilt-in-Space

(Georgia Institute of Technology, 2009) Sonenblum, Sharon Eve
A Data Processing Method to Measure the Use of Manual Wheelchairs

(Georgia Institute of Technology, 2009) Sonenblum, Sharon Eve ; Caspall, Jayme ; Lopez, Ricardo ; Sprigle, Stephen
Blood Flow and Pressure Changes That Occur With Tilt-in-space

(Georgia Institute of Technology, 2009) Sonenblum, Sharon Eve ; Sprigle, Stephen
Understanding Tilt-in-Space Use in Shepherd Center Clients

(Georgia Institute of Technology, 2008-08-18) Sonenblum, Sharon Eve
Why Full-time Power Wheelchair Users Tilt

(Georgia Institute of Technology, 2008-06) Sonenblum, Sharon Eve
Understanding Wheelchair Use Patterns: Tilt-in-Space

(Georgia Institute of Technology, 2008-03) Sonenblum, Sharon Eve ; Sprigle, Stephen ; Harris, Frances ; Maurer, Chris
Characterization of Power Wheelchair Use in the Home and Community

(Georgia Institute of Technology, 2008) Sonenblum, Sharon Eve ; Sprigle, Stephen ; Harris, Frances ; Maurer, Christine L.

Objective: To characterize the use of power wheelchairs and to determine if multiple measures of mobility and occupancy jointly provide a more comprehensive picture of wheelchair usage and daily activity in full-time power wheelchair users than daily distance alone. Design: Prospective observational study. Setting: Subjects’ everyday mobility was measured in their homes and communities for two weeks and prompted recall interviews were conducted by phone. Participants: A convenience sample of 25 non-ambulatory, full-time power wheelchair users. Interventions: Not applicable. Main Outcome Measures: Wheelchair usage was logged electronically and GPS / interview data were used to isolate chair use to home, indoors but not at home and outdoor environments. Distance wheeled, time spent wheeling, number of bouts, time spent in the wheelchair and the percent of time in the wheelchair spent wheeling were measured to describe wheelchair use. Results: The median wheelchair user spent 10.6 hours (5.0-16.6) in his/her wheelchair daily and wheeled 1.085 km (0.238-10.585) over 58 minutes (16-173) and 110 bouts (36-282). Wheelchair use varied across subjects, within subjects from day-to-day, and between environments. Mobility bouts outdoors were longer and faster than those wheeled indoors. In a regression analysis, distance wheeled explained only 33% of the variation in the number of bouts and 75% in the time spent wheeling. Conclusions: Power wheelchair use varies widely both within and between individuals. Measuring distance, time and number of bouts provides a clearer picture of mobility patterns than measuring distance alone, while occupancy helps to measure wheelchair function in daily activities.