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Accuracy and comparison of sensor-based gait speed estimations under standardized and daily life conditions in children undergoing rehabilitation

Rast, Fabian Marcel; Aschwanden, Seraina; Werner, Charlotte; Demkó, László; Labruyère, Rob (2022). Accuracy and comparison of sensor-based gait speed estimations under standardized and daily life conditions in children undergoing rehabilitation. Journal of Neuroengineering and Rehabilitation (JNER), 19:105.

Abstract

Background: Gait speed is a widely used outcome measure to assess the walking abilities of children undergoing rehabilitation. It is routinely determined during a walking test under standardized conditions, but it remains unclear whether these outcomes reflect the children's performance in daily life. An ankle-worn inertial sensor provides a usable opportunity to measure gait speed in the children's habitual environment. However, sensor-based gait speed estimations need to be accurate to allow for comparison of the children's gait speed between a test situation and daily life. Hence, the first aim of this study was to determine the measurement error of a novel algorithm that estimates gait speed based on data of a single ankle-worn inertial sensor in children undergoing rehabilitation. The second aim of this study was to compare the children's gait speed between standardized and daily life conditions.

Methods: Twenty-four children with walking impairments completed four walking tests at different speeds (standardized condition) and were monitored for one hour during leisure or school time (daily life condition). We determined accuracy by comparing sensor-based gait speed estimations with a reference method in both conditions. Eventually, we compared individual gait speeds between the two conditions.

Results: The measurement error was 0.01 ± 0.07 m/s under the standardized and 0.04 ± 0.06 m/s under the daily life condition. Besides, the majority of children did not use the same speed during the test situation as in daily life.

Conclusion: This study demonstrates an accurate method to measure children's gait speed during standardized walking tests and in the children's habitual environment after rehabilitation. It only requires a single ankle sensor, which potentially increases wearing time and data quality of measurements in daily life. We recommend placing the sensor on the less affected side, unless the child wears one orthosis. In this latter case, the sensor should be placed on the side with the orthosis. Moreover, this study showed that most children did not use the same speed in the two conditions, which encourages the use of wearable inertial sensors to assess the children's walking performance in their habitual environment following rehabilitation.

Keywords: Clinical assessments; Data processing algorithm; Everyday life; Pediatric rehabilitation; Walking; Wearable inertial sensors

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Children's Hospital Zurich > Medical Clinic
Dewey Decimal Classification:610 Medicine & health
Scopus Subject Areas:Health Sciences > Rehabilitation
Health Sciences > Health Informatics
Uncontrolled Keywords:Health Informatics, Rehabilitation
Language:English
Date:4 October 2022
Deposited On:20 Jan 2023 15:17
Last Modified:29 Oct 2024 02:35
Publisher:BioMed Central
ISSN:1743-0003
OA Status:Gold
Free access at:PubMed ID. An embargo period may apply.
Publisher DOI:https://doi.org/10.1186/s12984-022-01079-3
PubMed ID:36195950
Project Information:
  • Funder: Walter Muggli Fund of the ACCENTUS Foundation
  • Grant ID:
  • Project Title:
  • Funder: Children’s Research Center of the University Children’s Hospital of Zurich
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  • Funder: Anna Mueller Grocholski Foundation
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  • Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)

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