Estimation of horizontal running power using foot-worn inertial measurement units

Feedback of power during running is a promising tool for training and determining pacing strategies. However, current power estimation methods show low validity and are not customized for running on different slopes. To address this issue, we developed three machine-learning models to estimate peak...

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Main Authors: Salil Apte, Mathieu Falbriard, Frédéric Meyer, Grégoire P. Millet, Vincent Gremeaux, Kamiar Aminian
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-06-01
Series:Frontiers in Bioengineering and Biotechnology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fbioe.2023.1167816/full
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author Salil Apte
Mathieu Falbriard
Frédéric Meyer
Frédéric Meyer
Grégoire P. Millet
Vincent Gremeaux
Vincent Gremeaux
Kamiar Aminian
author_facet Salil Apte
Mathieu Falbriard
Frédéric Meyer
Frédéric Meyer
Grégoire P. Millet
Vincent Gremeaux
Vincent Gremeaux
Kamiar Aminian
author_sort Salil Apte
collection DOAJ
description Feedback of power during running is a promising tool for training and determining pacing strategies. However, current power estimation methods show low validity and are not customized for running on different slopes. To address this issue, we developed three machine-learning models to estimate peak horizontal power for level, uphill, and downhill running using gait spatiotemporal parameters, accelerometer, and gyroscope signals extracted from foot-worn IMUs. The prediction was compared to reference horizontal power obtained during running on a treadmill with an embedded force plate. For each model, we trained an elastic net and a neural network and validated it with a dataset of 34 active adults across a range of speeds and slopes. For the uphill and level running, the concentric phase of the gait cycle was considered, and the neural network model led to the lowest error (median ± interquartile range) of 1.7% ± 12.5% and 3.2% ± 13.4%, respectively. The eccentric phase was considered relevant for downhill running, wherein the elastic net model provided the lowest error of 1.8% ± 14.1%. Results showed a similar performance across a range of different speed/slope running conditions. The findings highlighted the potential of using interpretable biomechanical features in machine learning models for the estimating horizontal power. The simplicity of the models makes them suitable for implementation on embedded systems with limited processing and energy storage capacity. The proposed method meets the requirements for applications needing accurate near real-time feedback and complements existing gait analysis algorithms based on foot-worn IMUs.
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spelling doaj.art-dde8071f5b2747ab9d32b75d966660be2023-06-22T09:28:50ZengFrontiers Media S.A.Frontiers in Bioengineering and Biotechnology2296-41852023-06-011110.3389/fbioe.2023.11678161167816Estimation of horizontal running power using foot-worn inertial measurement unitsSalil Apte0Mathieu Falbriard1Frédéric Meyer2Frédéric Meyer3Grégoire P. Millet4Vincent Gremeaux5Vincent Gremeaux6Kamiar Aminian7Laboratory of Movement Analysis and Measurement, École Polytechnique Fédérale de Lausanne, Lausanne, SwitzerlandLaboratory of Movement Analysis and Measurement, École Polytechnique Fédérale de Lausanne, Lausanne, SwitzerlandDigital Signal Processing Group, Department of Informatics, University of Oslo, Oslo, NorwayInstitute of Sport Sciences, University of Lausanne, Lausanne, SwitzerlandInstitute of Sport Sciences, University of Lausanne, Lausanne, SwitzerlandInstitute of Sport Sciences, University of Lausanne, Lausanne, SwitzerlandSport Medicine Unit, Division of Physical Medicine and Rehabilitation, Swiss Olympic Medical Center, Lausanne University Hospital, Lausanne, SwitzerlandLaboratory of Movement Analysis and Measurement, École Polytechnique Fédérale de Lausanne, Lausanne, SwitzerlandFeedback of power during running is a promising tool for training and determining pacing strategies. However, current power estimation methods show low validity and are not customized for running on different slopes. To address this issue, we developed three machine-learning models to estimate peak horizontal power for level, uphill, and downhill running using gait spatiotemporal parameters, accelerometer, and gyroscope signals extracted from foot-worn IMUs. The prediction was compared to reference horizontal power obtained during running on a treadmill with an embedded force plate. For each model, we trained an elastic net and a neural network and validated it with a dataset of 34 active adults across a range of speeds and slopes. For the uphill and level running, the concentric phase of the gait cycle was considered, and the neural network model led to the lowest error (median ± interquartile range) of 1.7% ± 12.5% and 3.2% ± 13.4%, respectively. The eccentric phase was considered relevant for downhill running, wherein the elastic net model provided the lowest error of 1.8% ± 14.1%. Results showed a similar performance across a range of different speed/slope running conditions. The findings highlighted the potential of using interpretable biomechanical features in machine learning models for the estimating horizontal power. The simplicity of the models makes them suitable for implementation on embedded systems with limited processing and energy storage capacity. The proposed method meets the requirements for applications needing accurate near real-time feedback and complements existing gait analysis algorithms based on foot-worn IMUs.https://www.frontiersin.org/articles/10.3389/fbioe.2023.1167816/fullbiomechanicsmachine learningwearable sensorsmovement analysissignal processingquantitative feedback
spellingShingle Salil Apte
Mathieu Falbriard
Frédéric Meyer
Frédéric Meyer
Grégoire P. Millet
Vincent Gremeaux
Vincent Gremeaux
Kamiar Aminian
Estimation of horizontal running power using foot-worn inertial measurement units
Frontiers in Bioengineering and Biotechnology
biomechanics
machine learning
wearable sensors
movement analysis
signal processing
quantitative feedback
title Estimation of horizontal running power using foot-worn inertial measurement units
title_full Estimation of horizontal running power using foot-worn inertial measurement units
title_fullStr Estimation of horizontal running power using foot-worn inertial measurement units
title_full_unstemmed Estimation of horizontal running power using foot-worn inertial measurement units
title_short Estimation of horizontal running power using foot-worn inertial measurement units
title_sort estimation of horizontal running power using foot worn inertial measurement units
topic biomechanics
machine learning
wearable sensors
movement analysis
signal processing
quantitative feedback
url https://www.frontiersin.org/articles/10.3389/fbioe.2023.1167816/full
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