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Using Wearable Inertial Sensors to Compare Different Versions of the Dual Task Paradigm during Walking

H. Witchel,R. Needham,A. Healy,Joseph H. Guppy,Jake Bush,Cäcilia Oberndorfer,Chantal Herberz,Carina E. I. Westling,Dawit Kim,D. Roggen,J. Barth,B. Eskofier,W. Rashid,N. Chockalingam,J. Klucken

Published 2017 in European Conference on Cognitive Ergonomics

ABSTRACT

The dual task paradigm (DTP), where performance of a walking task co-occurs with a cognitive task to assess performance decrement, has been controversially mooted as a more suitable task to test safety from falls in outdoor and urban environments than simple walking in a hospital corridor. There are a variety of different cognitive tasks that have been used in the DTP, and we wanted to assess the use of a secondary task that requires mental tracking (the alternate letter alphabet task) against a more automatic working memory task (counting backward by ones). In this study we validated the x-io x-IMU wearable inertial sensors, used them to record healthy walking, and then used dynamic time warping to assess the elements of the gait cycle. In the timed 25 foot walk (T25FW) the alternate letter alphabet task lengthened the stride time significantly compared to ordinary walking, while counting backward did not. We conclude that adding a mental tracking task in a DTP will elicit performance decrement in healthy volunteers.

PUBLICATION RECORD

  • Publication year

    2017

  • Venue

    European Conference on Cognitive Ergonomics

  • Publication date

    2017-09-19

  • Fields of study

    Medicine, Computer Science, Engineering

  • Identifiers
    DOI 10.1145/3121283.3121285
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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