Soft wearable flexible bioelectronics integrated with an ankle-foot exoskeleton for estimation of metabolic costs and physical effort

Abstract Activities and physical effort have been commonly estimated using a metabolic rate through indirect calorimetry to capture breath information. The physical effort represents the work hardness used to optimize wearable robotic systems. Thus, personalization and rapid optimization of the effo...

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Main Authors: Jihoon Kim, Prakyath Kantharaju, Hoon Yi, Michael Jacobson, Hyungkeun Jeong, Hojoong Kim, Jinwoo Lee, Jared Matthews, Nathan Zavanelli, Hyeonseok Kim, Heejin Jeong, Myunghee Kim, Woon-Hong Yeo
Format: Article
Language:English
Published: Nature Portfolio 2023-01-01
Series:npj Flexible Electronics
Online Access:https://doi.org/10.1038/s41528-023-00239-2
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author Jihoon Kim
Prakyath Kantharaju
Hoon Yi
Michael Jacobson
Hyungkeun Jeong
Hojoong Kim
Jinwoo Lee
Jared Matthews
Nathan Zavanelli
Hyeonseok Kim
Heejin Jeong
Myunghee Kim
Woon-Hong Yeo
author_facet Jihoon Kim
Prakyath Kantharaju
Hoon Yi
Michael Jacobson
Hyungkeun Jeong
Hojoong Kim
Jinwoo Lee
Jared Matthews
Nathan Zavanelli
Hyeonseok Kim
Heejin Jeong
Myunghee Kim
Woon-Hong Yeo
author_sort Jihoon Kim
collection DOAJ
description Abstract Activities and physical effort have been commonly estimated using a metabolic rate through indirect calorimetry to capture breath information. The physical effort represents the work hardness used to optimize wearable robotic systems. Thus, personalization and rapid optimization of the effort are critical. Although respirometry is the gold standard for estimating metabolic costs, this method requires a heavy, bulky, and rigid system, limiting the system’s field deployability. Here, this paper reports a soft, flexible bioelectronic system that integrates a wearable ankle-foot exoskeleton, used to estimate metabolic costs and physical effort, demonstrating the potential for real-time wearable robot adjustments based on biofeedback. Data from a set of activities, including walking, running, and squatting with the biopatch and exoskeleton, determines the relationship between metabolic costs and heart rate variability root mean square of successive differences (HRV-RMSSD) (R = −0.758). Collectively, the exoskeleton-integrated wearable system shows potential to develop a field-deployable exoskeleton platform that can measure wireless real-time physiological signals.
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spelling doaj.art-06de028f1dee443eb79352e9eb20110c2023-01-29T12:24:28ZengNature Portfolionpj Flexible Electronics2397-46212023-01-017111010.1038/s41528-023-00239-2Soft wearable flexible bioelectronics integrated with an ankle-foot exoskeleton for estimation of metabolic costs and physical effortJihoon Kim0Prakyath Kantharaju1Hoon Yi2Michael Jacobson3Hyungkeun Jeong4Hojoong Kim5Jinwoo Lee6Jared Matthews7Nathan Zavanelli8Hyeonseok Kim9Heejin Jeong10Myunghee Kim11Woon-Hong Yeo12IEN Center for Human-Centric Interfaces and Engineering and George W. Woodruff School of Mechanical Engineering, Georgia Institute of TechnologyDepartment of Mechanical and Industrial Engineering, the University of Illinois at ChicagoIEN Center for Human-Centric Interfaces and Engineering and George W. Woodruff School of Mechanical Engineering, Georgia Institute of TechnologyDepartment of Mechanical and Industrial Engineering, the University of Illinois at ChicagoDepartment of Mechanical and Industrial Engineering, the University of Illinois at ChicagoIEN Center for Human-Centric Interfaces and Engineering and George W. Woodruff School of Mechanical Engineering, Georgia Institute of TechnologyIEN Center for Human-Centric Interfaces and Engineering and George W. Woodruff School of Mechanical Engineering, Georgia Institute of TechnologyIEN Center for Human-Centric Interfaces and Engineering and George W. Woodruff School of Mechanical Engineering, Georgia Institute of TechnologyIEN Center for Human-Centric Interfaces and Engineering and George W. Woodruff School of Mechanical Engineering, Georgia Institute of TechnologyIEN Center for Human-Centric Interfaces and Engineering and George W. Woodruff School of Mechanical Engineering, Georgia Institute of TechnologyDepartment of Mechanical and Industrial Engineering, the University of Illinois at ChicagoDepartment of Mechanical and Industrial Engineering, the University of Illinois at ChicagoIEN Center for Human-Centric Interfaces and Engineering and George W. Woodruff School of Mechanical Engineering, Georgia Institute of TechnologyAbstract Activities and physical effort have been commonly estimated using a metabolic rate through indirect calorimetry to capture breath information. The physical effort represents the work hardness used to optimize wearable robotic systems. Thus, personalization and rapid optimization of the effort are critical. Although respirometry is the gold standard for estimating metabolic costs, this method requires a heavy, bulky, and rigid system, limiting the system’s field deployability. Here, this paper reports a soft, flexible bioelectronic system that integrates a wearable ankle-foot exoskeleton, used to estimate metabolic costs and physical effort, demonstrating the potential for real-time wearable robot adjustments based on biofeedback. Data from a set of activities, including walking, running, and squatting with the biopatch and exoskeleton, determines the relationship between metabolic costs and heart rate variability root mean square of successive differences (HRV-RMSSD) (R = −0.758). Collectively, the exoskeleton-integrated wearable system shows potential to develop a field-deployable exoskeleton platform that can measure wireless real-time physiological signals.https://doi.org/10.1038/s41528-023-00239-2
spellingShingle Jihoon Kim
Prakyath Kantharaju
Hoon Yi
Michael Jacobson
Hyungkeun Jeong
Hojoong Kim
Jinwoo Lee
Jared Matthews
Nathan Zavanelli
Hyeonseok Kim
Heejin Jeong
Myunghee Kim
Woon-Hong Yeo
Soft wearable flexible bioelectronics integrated with an ankle-foot exoskeleton for estimation of metabolic costs and physical effort
npj Flexible Electronics
title Soft wearable flexible bioelectronics integrated with an ankle-foot exoskeleton for estimation of metabolic costs and physical effort
title_full Soft wearable flexible bioelectronics integrated with an ankle-foot exoskeleton for estimation of metabolic costs and physical effort
title_fullStr Soft wearable flexible bioelectronics integrated with an ankle-foot exoskeleton for estimation of metabolic costs and physical effort
title_full_unstemmed Soft wearable flexible bioelectronics integrated with an ankle-foot exoskeleton for estimation of metabolic costs and physical effort
title_short Soft wearable flexible bioelectronics integrated with an ankle-foot exoskeleton for estimation of metabolic costs and physical effort
title_sort soft wearable flexible bioelectronics integrated with an ankle foot exoskeleton for estimation of metabolic costs and physical effort
url https://doi.org/10.1038/s41528-023-00239-2
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