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Pubmed for Handhelds

PUBMED FOR HANDHELDS

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  • Title: A low-cost, portable system for the assessment of the postural response of wheelchair users to perturbations.
    Author: Kamper DG, Adams TC, Reger SI, Parnianpour M, Barin K, Linden M.
    Journal: IEEE Trans Rehabil Eng; 1999 Dec; 7(4):435-42. PubMed ID: 10609631.
    Abstract:
    Maintaining seated postural stability presents a serious challenge to wheelchair users in vehicles, even during normal driving conditions. The purpose of this research was to develop a system for the study of seated postural control in response to perturbations similar to those that might be experienced during vehicle turning and braking. A servo-controlled tilt platform was constructed to provide a low-cost, small, and easily transportable device for generating precise and repeatable perturbations. Tilt platform operation was examined for accuracy and reproducibility of a desired perturbation. Repeatability was high with a mean signal-to-noise ratio (SNR) of 45.4 for a given perturbation measured across 11 subjects. An initial comparison of stability results obtained on the tilt platform and in a vehicle showed a correspondence, although differences were apparent. The tilt platform has been used successfully to assess balance in spinal cord-injured subjects and to test wheelchair securement systems.
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