Stride Lengths during Maximal Linear Sprint Acceleration Obtained with Foot-Mounted Inertial Measurement Units

Inertial measurement units (IMUs) fixed to the lower limbs have been reported to provide accurate estimates of stride lengths (SLs) during walking. Due to technical challenges, validation of such estimates in running is generally limited to speeds (well) below 5 m·s<sup>−1</sup>. However...

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Main Authors: Cornelis J. de Ruiter, Erik Wilmes, Pepijn S. van Ardenne, Niels Houtkamp, Reinder A. Prince, Maarten Wooldrik, Jaap H. van Dieën
Format: Article
Language:English
Published: MDPI AG 2022-01-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/22/1/376
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author Cornelis J. de Ruiter
Erik Wilmes
Pepijn S. van Ardenne
Niels Houtkamp
Reinder A. Prince
Maarten Wooldrik
Jaap H. van Dieën
author_facet Cornelis J. de Ruiter
Erik Wilmes
Pepijn S. van Ardenne
Niels Houtkamp
Reinder A. Prince
Maarten Wooldrik
Jaap H. van Dieën
author_sort Cornelis J. de Ruiter
collection DOAJ
description Inertial measurement units (IMUs) fixed to the lower limbs have been reported to provide accurate estimates of stride lengths (SLs) during walking. Due to technical challenges, validation of such estimates in running is generally limited to speeds (well) below 5 m·s<sup>−1</sup>. However, athletes sprinting at (sub)maximal effort already surpass 5 m·s<sup>−1</sup> after a few strides. The present study aimed to develop and validate IMU-derived SLs during maximal linear overground sprints. Recreational athletes (<i>n</i> = 21) completed two sets of three 35 m sprints executed at 60, 80, and 100% of subjective effort, with an IMU on the instep of each shoe. Reference SLs from start to ~30 m were obtained with a series of video cameras. SLs from IMUs were obtained by double integration of horizontal acceleration with a zero-velocity update, corrected for acceleration artefacts at touch-down of the feet. Peak sprint speeds (mean ± SD) reached at the three levels of effort were 7.02 ± 0.80, 7.65 ± 0.77, and 8.42 ± 0.85 m·s<sup>−1</sup>, respectively. Biases (±Limits of Agreement) of SLs obtained from all participants during sprints at 60, 80, and 100% effort were 0.01% (±6.33%), −0.75% (±6.39%), and −2.51% (±8.54%), respectively. In conclusion, in recreational athletes wearing IMUs tightly fixed to their shoes, stride length can be estimated with reasonable accuracy during maximal linear sprint acceleration.
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spelling doaj.art-832aad6a60c74eb5890835e02471d67d2023-11-23T12:21:17ZengMDPI AGSensors1424-82202022-01-0122137610.3390/s22010376Stride Lengths during Maximal Linear Sprint Acceleration Obtained with Foot-Mounted Inertial Measurement UnitsCornelis J. de Ruiter0Erik Wilmes1Pepijn S. van Ardenne2Niels Houtkamp3Reinder A. Prince4Maarten Wooldrik5Jaap H. van Dieën6Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, 1081 BT Amsterdam, The NetherlandsDepartment of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, 1081 BT Amsterdam, The NetherlandsDepartment of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, 1081 BT Amsterdam, The NetherlandsDepartment of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, 1081 BT Amsterdam, The NetherlandsDepartment of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, 1081 BT Amsterdam, The NetherlandsDepartment of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, 1081 BT Amsterdam, The NetherlandsDepartment of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, 1081 BT Amsterdam, The NetherlandsInertial measurement units (IMUs) fixed to the lower limbs have been reported to provide accurate estimates of stride lengths (SLs) during walking. Due to technical challenges, validation of such estimates in running is generally limited to speeds (well) below 5 m·s<sup>−1</sup>. However, athletes sprinting at (sub)maximal effort already surpass 5 m·s<sup>−1</sup> after a few strides. The present study aimed to develop and validate IMU-derived SLs during maximal linear overground sprints. Recreational athletes (<i>n</i> = 21) completed two sets of three 35 m sprints executed at 60, 80, and 100% of subjective effort, with an IMU on the instep of each shoe. Reference SLs from start to ~30 m were obtained with a series of video cameras. SLs from IMUs were obtained by double integration of horizontal acceleration with a zero-velocity update, corrected for acceleration artefacts at touch-down of the feet. Peak sprint speeds (mean ± SD) reached at the three levels of effort were 7.02 ± 0.80, 7.65 ± 0.77, and 8.42 ± 0.85 m·s<sup>−1</sup>, respectively. Biases (±Limits of Agreement) of SLs obtained from all participants during sprints at 60, 80, and 100% effort were 0.01% (±6.33%), −0.75% (±6.39%), and −2.51% (±8.54%), respectively. In conclusion, in recreational athletes wearing IMUs tightly fixed to their shoes, stride length can be estimated with reasonable accuracy during maximal linear sprint acceleration.https://www.mdpi.com/1424-8220/22/1/376wearablesIMUstride lengthrunningaccelerationathletics
spellingShingle Cornelis J. de Ruiter
Erik Wilmes
Pepijn S. van Ardenne
Niels Houtkamp
Reinder A. Prince
Maarten Wooldrik
Jaap H. van Dieën
Stride Lengths during Maximal Linear Sprint Acceleration Obtained with Foot-Mounted Inertial Measurement Units
Sensors
wearables
IMU
stride length
running
acceleration
athletics
title Stride Lengths during Maximal Linear Sprint Acceleration Obtained with Foot-Mounted Inertial Measurement Units
title_full Stride Lengths during Maximal Linear Sprint Acceleration Obtained with Foot-Mounted Inertial Measurement Units
title_fullStr Stride Lengths during Maximal Linear Sprint Acceleration Obtained with Foot-Mounted Inertial Measurement Units
title_full_unstemmed Stride Lengths during Maximal Linear Sprint Acceleration Obtained with Foot-Mounted Inertial Measurement Units
title_short Stride Lengths during Maximal Linear Sprint Acceleration Obtained with Foot-Mounted Inertial Measurement Units
title_sort stride lengths during maximal linear sprint acceleration obtained with foot mounted inertial measurement units
topic wearables
IMU
stride length
running
acceleration
athletics
url https://www.mdpi.com/1424-8220/22/1/376
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