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Patients' and health care providers' knowledge of wheelchair transportation issues
The objective of this study was to determine the level of knowledge about wheelchair transportation safety practices among wheelchair users (WCUs) and caregivers, therapists, physicians, and other professionals (CTPs). Two 10-question surveys were designed. One was administered to a convenience...
Comparing the effects of age, BMI and gender on severe injury (AIS 3+) in motor-vehicle crashes
The effects of age, body mass index (BMI) and gender on motor vehicle crash (MVC) injuries are not well understood and current prevention efforts do not effectively address variability in occupant characteristics.
A method for determining the vehicle-to-ground contact load during laboratory-based rollover tests
Many rollover safety researches have been conducted experimentally and analytically to investigate the underlying causes of vehicle accidents and develop rollover test procedures and test methodologies to help understand the nature of rollover crash events. In addition, electronic and/or mechanical...
Test-retest reliability, internal item consistency, and concurrent validity of the wheelchair seating discomfort assessment tool
Discomfort is a common problem for wheelchair users. Few researchers have investigated discomfort among wheelchair users or potential solutions for this problem. One of the impediments to quantitative research on wheelchair seating discomfort has been the lack of a reliable method for quantifying...
Postural behaviors during one-hand force exertions
Posture and external loads such as hand forces have a dominant effect on ergonomic analysis outcomes. Yet, current digital human modeling tools used for proactive ergonomics analysis lack validated models for predicting postures for standing hand-force exertions. To address this need, the effects...
Time-to-collision judgments under realistic driving conditions
Objective: This study examined perceived time to collision (TTC) with automobile drivers under realistic approach, rear-end crash scenario conditions. Background: TTC refers to the time before impact if prevailing conditions continue. Method: In this test track study involving 51 drivers ranging...
Evaluation of proposed protocols for assessing vehicle LATCH system usability
This project assessed current or proposed protocols for improving the usability of LATCH (Lower Anchors and Tethers for Children). LATCH hardware in the left second-row position of 98 2011 or 2010 model-year vehicles was evaluated using ISO and SAE LATCH usability rating guidelines. Child restraint...
Anthropometric and postural variability: limitations of the boundary manikin appraoch
Human figure models are commonly used to facilitate ergonomic assessments of vehicle driver stations and other workplaces. One routine method of workstation assessment is to conduct a suite of ergonomic analyses using a family of boundary manikins, chosen to represent a range of anthropometric...
Responsiveness of the TAWC tool for assessing wheelchair discomfort
Purpose . The purpose of this research was to determine the clinical usefulness of the Tool for Assessing Wheelchair disComfort (TAWC) by examining floor and ceiling effects and responsiveness when used with two groups of wheelchair users – one known to have experienced real changes in discomfort...
Improved head restraint design for safety and compliance
The National Highway Traffic Safety Administration (NHTSA) recently revised Federal Motor Vehicle Safety Standard (FMVSS) 202, which governs head restraints. The new standard, known as FMVSS 202a, establishes for the first time in the U.S. a requirement for the fore-aft position of the head...

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