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College of Design

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Author: Sonenblum, Sharon Eve × search.filters.applied.f.resourcesubtype: Poster ×

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Mobility Metrics for Manual Wheelchair Use in Everyday Life

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.

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Use of GPS and Sensor-based Instrumentation as a Supplement to Self-Report in Studies of Activity and Participation

2005 , Lankton, Shawn , Sonenblum, Sharon Eve , Sprigle, Stephen , Wolf, Jean , Oliveira, Marcelo

To obtain more accurate quantitative results when monitoring people’s daily activities we have developed a passive data monitoring system. This Wheelchair Activity Monitoring Instrument known as the WhAMI uses odometers, tilt and seat occupancy sensors, and a Global Positioning System (GPS) to gather information about wheelchair users’ daily activities. The purpose of this pilot study was to develop and test the WhAMI. Thus far, we have completed data collection on 3 subjects. Our results demonstrate that data from the WhAMI accurately describes the subjects’ community travel, indoor mobility, and use of the tilt-in-space feature. The WhAMI is a valuable tool for collecting this quantitative data, and is designed to be used in combination with self report surveys to paint a complete picture of a subject’s activity and participation.

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A Data Processing Method to Measure the Use of Manual Wheelchairs

2009 , Sonenblum, Sharon Eve , Caspall, Jayme , Lopez, Ricardo , Sprigle, Stephen

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Non-Invasive Erythema Detection Using Spectral Imaging

2005 , Sonenblum, Sharon Eve , Sprigle, Stephen , West, Leanne L. , Wood, Jack W.

Erythema, or skin redness, seen after prolonged pressure application is a precursor to pressure ulcers. These occur in people with limited mobility and sensation including the elderly and people with SCI. Erythema is masked by melanin in persons with darkly pigmented skin making it hard to detect. This study addressed the feasibility of using spectral imaging to detect erythema. Erythema was induced in 32 healthy adults of varying skin color and photographed using 12 narrow-band filters. We mathematically combined the images and applied standard image processing techniques to make the erythema stand out. The results suggest that spectral imaging has potential for detecting erythema. Future work will use automatic optimization to quantitatively calculate the best processing method.

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A Case Study Comparing Activity and Participation Measurement in Two Subjects

2007 , Harris, Frances , Sonenblum, Sharon Eve , Sprigle, Stephen

This case study compares the differences between complementary methodologies that measure activity and participation in two subjects who use wheeled mobility devices. Data collection consisted of 1) a self-report participation measure for people with mobility disabilities - the Community Participation and Perceived Receptivity Survey (CPPRS) - and 2) a passive instrumentation data-gathering methodology that includes a global positioning system (GPS) data logger, followed by a prompted recall interview (PRI) to confirm GPS data location and query activity purpose. Many of the destination types (e.g., grocery stores) named in the CPPRS were confirmed by GPS/PRI data. Issues affecting subject responses in both methods included ambiguous categories and researcher assumptions about the nature of activity. Differences between self-report and instrumentation data are discussed as they impact understanding activity and community participation among wheeled mobility users and the development of self-report participation instruments.

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Kinematics of Lateral Transfers: A Pilot Study

2005 , Sonenblum, Sharon Eve , Sprigle, Stephen , VanHeil, Leslie , Maurer, Chris

People with spinal cord injuries (SCI) must transfer many times daily. Despite the importance of proper transfers, researchers have not completely described the kinematics of lateral transfers. In this study, 19 male adults with SCI who transfer independently or with minimal assistance were recruited to perform three lateral transfers to and from a therapy mat. On average, subjects elevated their sacroiliac joints (buttocks) 11 inches above the therapy mat and lowered the tempromandibular joint (head) to 21 inches above the mat. Subjects used a variety of strategies to complete the transfer that differed by their timing, the number of lifts performed, and their body positioning during transfers. Transfers from the wheelchair to the mat were more consistent within subjects.

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