Outside testing of wearable robots for gait assistance shows a higher metabolic benefit than testing on treadmills

Abstract Most wearable robots that assist the gait of workers, soldiers, athletes, and hobbyists are developed towards a vision of outdoor, overground walking. However, so far, these devices have predominantly been tested indoors on laboratory treadmills. It is unclear whether treadmill-based labora...

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Autores principales:	Florian Leander Haufe, Eléonore Gascou Duroyon, Peter Wolf, Robert Riener, Michele Xiloyannis
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/952086dd054246d39388296805c25b33
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spelling	oai:doaj.org-article:952086dd054246d39388296805c25b332021-12-02T17:55:13ZOutside testing of wearable robots for gait assistance shows a higher metabolic benefit than testing on treadmills10.1038/s41598-021-94448-22045-2322https://doaj.org/article/952086dd054246d39388296805c25b332021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94448-2https://doaj.org/toc/2045-2322Abstract Most wearable robots that assist the gait of workers, soldiers, athletes, and hobbyists are developed towards a vision of outdoor, overground walking. However, so far, these devices have predominantly been tested indoors on laboratory treadmills. It is unclear whether treadmill-based laboratory tests are an accurate representation of overground ambulation outdoors with respect to essential outcomes such as the metabolic benefits of robotic assistance. In this study, we investigated the metabolic benefits of the Myosuit, a wearable robot that assists hip and knee extension during the stance phase of gait, for eight unimpaired participants during uphill walking trials in three settings: outside, on a self-paced treadmill with a virtual reality display, and on a standard treadmill at a fixed gait speed. The relative metabolic reduction with Myosuit assistance was most pronounced in the outside setting at − 10.6% and significantly larger than in the two treadmill settings (− 6.9%, p = 0.015 and − 6.2%, p = 0.008). This indicates that treadmill tests likely result in systematically low estimate for the true metabolic benefits of wearable robots during outside, overground walking. Hence, wearable robots should preferably be tested in an outdoor environment to obtain more representative—and ultimately more favorable—results with respect to the metabolic benefit of robotic gait assistance.Florian Leander HaufeEléonore Gascou DuroyonPeter WolfRobert RienerMichele XiloyannisNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Florian Leander Haufe Eléonore Gascou Duroyon Peter Wolf Robert Riener Michele Xiloyannis Outside testing of wearable robots for gait assistance shows a higher metabolic benefit than testing on treadmills
description	Abstract Most wearable robots that assist the gait of workers, soldiers, athletes, and hobbyists are developed towards a vision of outdoor, overground walking. However, so far, these devices have predominantly been tested indoors on laboratory treadmills. It is unclear whether treadmill-based laboratory tests are an accurate representation of overground ambulation outdoors with respect to essential outcomes such as the metabolic benefits of robotic assistance. In this study, we investigated the metabolic benefits of the Myosuit, a wearable robot that assists hip and knee extension during the stance phase of gait, for eight unimpaired participants during uphill walking trials in three settings: outside, on a self-paced treadmill with a virtual reality display, and on a standard treadmill at a fixed gait speed. The relative metabolic reduction with Myosuit assistance was most pronounced in the outside setting at − 10.6% and significantly larger than in the two treadmill settings (− 6.9%, p = 0.015 and − 6.2%, p = 0.008). This indicates that treadmill tests likely result in systematically low estimate for the true metabolic benefits of wearable robots during outside, overground walking. Hence, wearable robots should preferably be tested in an outdoor environment to obtain more representative—and ultimately more favorable—results with respect to the metabolic benefit of robotic gait assistance.
format	article
author	Florian Leander Haufe Eléonore Gascou Duroyon Peter Wolf Robert Riener Michele Xiloyannis
author_facet	Florian Leander Haufe Eléonore Gascou Duroyon Peter Wolf Robert Riener Michele Xiloyannis
author_sort	Florian Leander Haufe
title	Outside testing of wearable robots for gait assistance shows a higher metabolic benefit than testing on treadmills
title_short	Outside testing of wearable robots for gait assistance shows a higher metabolic benefit than testing on treadmills
title_full	Outside testing of wearable robots for gait assistance shows a higher metabolic benefit than testing on treadmills
title_fullStr	Outside testing of wearable robots for gait assistance shows a higher metabolic benefit than testing on treadmills
title_full_unstemmed	Outside testing of wearable robots for gait assistance shows a higher metabolic benefit than testing on treadmills
title_sort	outside testing of wearable robots for gait assistance shows a higher metabolic benefit than testing on treadmills
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/952086dd054246d39388296805c25b33
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Outside testing of wearable robots for gait assistance shows a higher metabolic benefit than testing on treadmills

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