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Comparison of the Capacitance of a Cyclically Fatigued Stretch Sensor to a Non-Fatigued Stretch Sensor When Performing Static and Dynamic Foot-Ankle Motions

Motion capture is the current gold standard for assessing movement of the human body, but laboratory settings do not always mimic the natural terrains and movements encountered by humans. To overcome such limitations, a smart sock that is equipped with stretch sensors is being developed to record mo...

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Autores principales: Persons, Andrea Karen, Middleton, Carver, Parker, Erin, Carroll, Will, Turner, Alana, Talegaonkar, Purva, Davarzani, Samaneh, Saucier, David, Chander, Harish, Ball, John E., Elder, Steven H., Simpson, Chartrisa LaShan, Macias, David, Burch V., Reuben F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9661536/
https://www.ncbi.nlm.nih.gov/pubmed/36365868
http://dx.doi.org/10.3390/s22218168
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author Persons, Andrea Karen
Middleton, Carver
Parker, Erin
Carroll, Will
Turner, Alana
Talegaonkar, Purva
Davarzani, Samaneh
Saucier, David
Chander, Harish
Ball, John E.
Elder, Steven H.
Simpson, Chartrisa LaShan
Macias, David
Burch V., Reuben F.
author_facet Persons, Andrea Karen
Middleton, Carver
Parker, Erin
Carroll, Will
Turner, Alana
Talegaonkar, Purva
Davarzani, Samaneh
Saucier, David
Chander, Harish
Ball, John E.
Elder, Steven H.
Simpson, Chartrisa LaShan
Macias, David
Burch V., Reuben F.
author_sort Persons, Andrea Karen
collection PubMed
description Motion capture is the current gold standard for assessing movement of the human body, but laboratory settings do not always mimic the natural terrains and movements encountered by humans. To overcome such limitations, a smart sock that is equipped with stretch sensors is being developed to record movement data outside of the laboratory. For the smart sock stretch sensors to provide valuable feedback, the sensors should have durability of both materials and signal. To test the durability of the stretch sensors, the sensors were exposed to high-cycle fatigue testing with simultaneous capture of the capacitance. Following randomization, either the fatigued sensor or an unfatigued sensor was placed in the plantarflexion position on the smart sock, and participants were asked to complete the following static movements: dorsiflexion, inversion, eversion, and plantarflexion. Participants were then asked to complete gait trials. The sensor was then exchanged for either an unfatigued or fatigued plantarflexion sensor, depending upon which sensor the trials began with, and each trial was repeated by the participant using the opposite sensor. Results of the tests show that for both the static and dynamic movements, the capacitive output of the fatigued sensor was consistently higher than that of the unfatigued sensor suggesting that an upwards drift of the capacitance was occurring in the fatigued sensors. More research is needed to determine whether stretch sensors should be pre-stretched prior to data collection, and to also determine whether the drift stabilizes once the cyclic softening of the materials comprising the sensor has stabilized.
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spelling pubmed-96615362022-11-15 Comparison of the Capacitance of a Cyclically Fatigued Stretch Sensor to a Non-Fatigued Stretch Sensor When Performing Static and Dynamic Foot-Ankle Motions Persons, Andrea Karen Middleton, Carver Parker, Erin Carroll, Will Turner, Alana Talegaonkar, Purva Davarzani, Samaneh Saucier, David Chander, Harish Ball, John E. Elder, Steven H. Simpson, Chartrisa LaShan Macias, David Burch V., Reuben F. Sensors (Basel) Article Motion capture is the current gold standard for assessing movement of the human body, but laboratory settings do not always mimic the natural terrains and movements encountered by humans. To overcome such limitations, a smart sock that is equipped with stretch sensors is being developed to record movement data outside of the laboratory. For the smart sock stretch sensors to provide valuable feedback, the sensors should have durability of both materials and signal. To test the durability of the stretch sensors, the sensors were exposed to high-cycle fatigue testing with simultaneous capture of the capacitance. Following randomization, either the fatigued sensor or an unfatigued sensor was placed in the plantarflexion position on the smart sock, and participants were asked to complete the following static movements: dorsiflexion, inversion, eversion, and plantarflexion. Participants were then asked to complete gait trials. The sensor was then exchanged for either an unfatigued or fatigued plantarflexion sensor, depending upon which sensor the trials began with, and each trial was repeated by the participant using the opposite sensor. Results of the tests show that for both the static and dynamic movements, the capacitive output of the fatigued sensor was consistently higher than that of the unfatigued sensor suggesting that an upwards drift of the capacitance was occurring in the fatigued sensors. More research is needed to determine whether stretch sensors should be pre-stretched prior to data collection, and to also determine whether the drift stabilizes once the cyclic softening of the materials comprising the sensor has stabilized. MDPI 2022-10-25 /pmc/articles/PMC9661536/ /pubmed/36365868 http://dx.doi.org/10.3390/s22218168 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Persons, Andrea Karen
Middleton, Carver
Parker, Erin
Carroll, Will
Turner, Alana
Talegaonkar, Purva
Davarzani, Samaneh
Saucier, David
Chander, Harish
Ball, John E.
Elder, Steven H.
Simpson, Chartrisa LaShan
Macias, David
Burch V., Reuben F.
Comparison of the Capacitance of a Cyclically Fatigued Stretch Sensor to a Non-Fatigued Stretch Sensor When Performing Static and Dynamic Foot-Ankle Motions
title Comparison of the Capacitance of a Cyclically Fatigued Stretch Sensor to a Non-Fatigued Stretch Sensor When Performing Static and Dynamic Foot-Ankle Motions
title_full Comparison of the Capacitance of a Cyclically Fatigued Stretch Sensor to a Non-Fatigued Stretch Sensor When Performing Static and Dynamic Foot-Ankle Motions
title_fullStr Comparison of the Capacitance of a Cyclically Fatigued Stretch Sensor to a Non-Fatigued Stretch Sensor When Performing Static and Dynamic Foot-Ankle Motions
title_full_unstemmed Comparison of the Capacitance of a Cyclically Fatigued Stretch Sensor to a Non-Fatigued Stretch Sensor When Performing Static and Dynamic Foot-Ankle Motions
title_short Comparison of the Capacitance of a Cyclically Fatigued Stretch Sensor to a Non-Fatigued Stretch Sensor When Performing Static and Dynamic Foot-Ankle Motions
title_sort comparison of the capacitance of a cyclically fatigued stretch sensor to a non-fatigued stretch sensor when performing static and dynamic foot-ankle motions
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9661536/
https://www.ncbi.nlm.nih.gov/pubmed/36365868
http://dx.doi.org/10.3390/s22218168
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