Removing energy with an exoskeleton reduces the metabolic cost of walking

doi:10.1126/science.aba9947

GSTDTAP > 气候变化

DOI	10.1126/science.aba9947
	Removing energy with an exoskeleton reduces the metabolic cost of walking
	Michael Shepertycky; Sarah Burton; Andrew Dickson; Yan-Fei Liu; Qingguo Li
	2021-05-28
发表期刊	Science
出版年	2021
英文摘要	Many devices have been developed to harvest energy from walking or running, but their use often comes at cost to the wearer in the form of increased metabolic demand. Shepertycky et al. designed a device that can harvest mechanical energy from a natural walking gait and convert it to useable electrical energy while also reducing the metabolic energy consumption of the user (see the Perspective by Riemer et al. ). The key to achieving “something from nothing” comes from designing the device to use muscle-centric control of the knee exoskeleton resistance to reduce active muscle force during the late part of the leg swing cycle. Science , aba9947, this issue p. [957][1]; see also abh4007, p. [909][2] Evolutionary pressures have led humans to walk in a highly efficient manner that conserves energy, making it difficult for exoskeletons to reduce the metabolic cost of walking. Despite the challenge, some exoskeletons have managed to lessen the metabolic expenditure of walking, either by adding or storing and returning energy. We show that the use of an exoskeleton that strategically removes kinetic energy during the swing period of the gait cycle reduces the metabolic cost of walking by 2.5 ± 0.8% for healthy male users while converting the removed energy into 0.25 ± 0.02 watts of electrical power. By comparing two loading profiles, we demonstrate that the timing and magnitude of energy removal are vital for successful metabolic cost reduction. [1]: /lookup/doi/10.1126/science.aba9947 [2]: /lookup/doi/10.1126/science.abh4007
领域	气候变化 ; 资源环境
URL	查看原文
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/328865
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Michael Shepertycky,Sarah Burton,Andrew Dickson,et al. Removing energy with an exoskeleton reduces the metabolic cost of walking[J]. Science,2021.
APA	Michael Shepertycky,Sarah Burton,Andrew Dickson,Yan-Fei Liu,&Qingguo Li.(2021).Removing energy with an exoskeleton reduces the metabolic cost of walking.Science.
MLA	Michael Shepertycky,et al."Removing energy with an exoskeleton reduces the metabolic cost of walking".Science (2021).