Using wearable inertial sensors to compare different versions of the dual task paradigm during walking

Witchel, Harry J, Needham, Robert, Healy, Aoife, Guppy, Joseph H, Bush, Jake, Oberndorfer, Cäcilia, Herberz, Chantal, Westling, Carina E I, Kim, Dawit, Roggen, Daniel, Barth, Jens, Eskofier, Björn M, Rashid, Waqar, Chockalingam, Nachiappan and Klucken, Jochen (2017) Using wearable inertial sensors to compare different versions of the dual task paradigm during walking. European Conference on Cognitive Ergonomics, University of Umeå, Sweden, 20-22 Sep 2017. Published in: Proceedings of the European Conference on Cognitive Ergonomics (ECCE 2017). Association for Computing Machinery (Accepted)

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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.

Item Type: Conference Proceedings
Keywords: MEMS, accelerometer, accelerometry, xio, x-io, xIMU, gyroscope, T25FW, ambulatory, ambulation, inertial.
Schools and Departments: Brighton and Sussex Medical School > Neuroscience
School of Engineering and Informatics > Engineering and Design
School of Media, Film and Music > Media and Film
Depositing User: Alexei Fisk
Date Deposited: 14 Jul 2017 12:16
Last Modified: 17 Jul 2017 15:21
URI: http://sro.sussex.ac.uk/id/eprint/69269

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