Comparison of Hybrid III ADT and Wheelchair User AT Selection SpeedsBy Dvorznak, M.J.; Cooper, R.A.; Boninger, M.L.; Fitzgerald, S.G.; Corfman, T.A.; Proceedings of the RESNA 25th International Conference, Vol. 22, No. 1, pp. 342-334
Publication Date: June/July 2002
Study to determine if a modified male Hybrid III anthropomorphic test dummy has a similar dynamic response as a wheelchair user with a spinal cord injury. Modifications were made to the dummy to provide for greater range of motion in the hip joints, creating more realistic trunk motion. An individual with T8 paraplegia was used as an example for comparison tests. Input was provided by a Quickie P100, which was chosen because it presented minimal risk of causing the participant to fall. Testing was performed in an EZ-Street, and an OPTOTRAK 3020 motion measurement system was used to sample 3-D position data. Data were analyzed using custom programs written in Matlab. Test protocol included three braking functions: (1) joystick release, (2) joystick full reverse, and (3) emergency power-off. Trunk angular displacement was calculated using a sagittal plane projection of markers placed on the knee, hip, and shoulder. Angular displacement data were numerically differentiated to obtain trunk angular velocity and acceleration. Quantitative results were displayed in table format. The authors found that the Hybrid III test dummy could be a suitable surrogate for a wheelchair user in low-speed dynamic studies.
Assistive Products Discussed: QUICKIE P100 AND QUICKIE P110
Published by: Rehabilitation Engineering & Assistive Technology Society of North America (RESNA) (Website:http://www.resna.org)