Many people who suffer from rheumatic diseases report that they are physically unable to use standard car seat belts unaided. this study was set up to determine exactly which aspects of seat belt design caused them problems and pain. a sample of 73 rheumatic subjects, all of whom reported problems with seat belts, took part in the study. each subject rated two seat belts for problems and pain caused when performing the tasks necessary for independent belt use. eight belt designs were investigated. the study identified the design features that facilitated or hindered the execution of each task. suggestions are made for adaptations to belt design. these, which aim for independent belt use by rheumatism sufferers, should also prove of benefit to the able-bodied user.(A)
Abstract