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ThinkMind // ADAPTIVE 2020, The Twelfth International Conference on Adaptive and Self-Adaptive Systems and Applications // View article adaptive_2020_1_40_58007


Estimating Internal Power in Walking and Running with a Smart Sock

Authors:
Dicle Yilmaz
Stephan Selinger
Florian Eibensteiner

Keywords: Smart socks; Running; Internal power

Abstract:
The aim of this study is to investigate whether it is possible to estimate internal power in walking and running with a smart sock which is equipped with textile pressure sensors. Since commercially available smart socks are already used by runners to classify injury-prone running styles, such as running with low cadence and heel-striking, incorporating power measurement into the socks would make the usage of a separate power meter obsolete. While walking and running with different velocities and gradients on a treadmill, four subjects wore a pair of smart socks as well as a Stryd power meter as a reference system. The measurements from the pressure sensors were used to train regression algorithms, such as linear regression, trees of linear regressions (M5P), random forest, and k-nearest neighbors (KNN) to predict power. Preliminary results after a total of 42 runs show that depending on the actually used regression algorithm correlation coefficients between 0.75 and 0.99 and a mean absolute error between 1.5 and 21.8 Watts could be achieved. Although these results appear promising, the number of participants and test runs must be increased significantly in order to arrive at valid conclusions.

Pages: 17 to 20

Copyright: Copyright (c) IARIA, 2020

Publication date: April 26, 2020

Published in: conference

ISSN: 2308-4146

ISBN: 978-1-61208-781-8

Location: Nice, France

Dates: from October 25, 2020 to October 29, 2020

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