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    Volume 43, Issue 3 (May 2015)

    Slip Prediction Accuracy and Bias of the SATRA STM 603 Whole Shoe Tester

    (Received 27 November 2013; accepted 4 March 2014)

    Published Online: 2015

    CODEN: JTEVAB

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    Abstract

    The primary purpose of this study was to determine the ability of the SATRA STM 603 whole shoe tester to predict slip potential using EN ISO 13287 test parameters. A secondary purpose was to determine whether altering EN ISO 13287 test parameters improves slip prediction accuracy and assessment bias. The utilized coefficient of friction and kinematic data were recorded for 34 healthy adults. Each subject ambulated across water-contaminated porcelain tile, and the slip outcomes were recorded. Available friction testing was performed with the SATRA STM 603 using EN ISO 13287 test parameters and 44 permutations of EN ISO 13287 test parameters that varied with respect to normal force, sliding velocity, and shoe contact angle. Results revealed that the EN ISO 13287 model exhibited positive coefficient-of-friction assessment bias (0.132) and predicted only 35 % of slip events. Modifying EN ISO 13287 test parameters decreased assessment bias (0.000) and increased slip prediction accuracy to 74 % of slip events.


    Author Information:

    Blanchette, Mark G.
    Semper Scientific, Mission Viejo, CA

    Division of Biokinesiology & Physical Therapy, Univ. of Southern California, Los Angeles, CA

    Powers, Christopher M.
    Division of Biokinesiology & Physical Therapy, Univ. of Southern California, Los Angeles, CA


    Stock #: JTE20130308

    ISSN:0090-3973

    DOI: 10.1520/JTE20130308

    Author
    Title Slip Prediction Accuracy and Bias of the SATRA STM 603 Whole Shoe Tester
    Symposium ,
    Committee F13