Metabolic cost adaptations during training with a soft exosuit assisting the hip joint
Different adaptation rates have been reported in studies involving ankle exoskeletons designed to reduce the metabolic cost of their wearers. This work aimed to investigate energetic adaptations occurring over multiple training sessions, while walking with a soft exosuit assisting the hip joint. The...
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| Veröffentlicht in: | Scientific reports 2019-07, Vol.9 (1), p.9779-10, Article 9779 |
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| creator | Panizzolo, Fausto A. Freisinger, Gregory M. Karavas, Nikos Eckert-Erdheim, Asa M. Siviy, Christopher Long, Andrew Zifchock, Rebecca A. LaFiandra, Michael E. Walsh, Conor J. |
| description | Different adaptation rates have been reported in studies involving ankle exoskeletons designed to reduce the metabolic cost of their wearers. This work aimed to investigate energetic adaptations occurring over multiple training sessions, while walking with a soft exosuit assisting the hip joint. The participants attended five training sessions within 20 days. They walked carrying a load of 20.4 kg for 20 minutes with the exosuit powered and five minutes with the exosuit unpowered. Percentage change in net metabolic cost between the powered and unpowered conditions improved across sessions from −6.2 ± 3.9% (session one) to −10.3 ± 4.7% (session five), indicating a significant effect associated with training. The percentage change at session three (−10.5 ± 4.5%) was similar to the percentage change at session five, indicating that two 20-minute sessions may be sufficient for users to fully adapt and maximize the metabolic benefit provided by the exoskeleton. Retention was also tested measuring the metabolic reduction five months after the last training session. The percent change in metabolic cost during this session (−10.1 ± 3.2%) was similar to the last training session, indicating that the adaptations resulting in reduced metabolic cost are preserved. These outcomes are relevant when evaluating exoskeletons’ performance on naïve users, with a specific focus on hip extension assistance. |
| doi_str_mv | 10.1038/s41598-019-45914-5 |
| format | Article |
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This work aimed to investigate energetic adaptations occurring over multiple training sessions, while walking with a soft exosuit assisting the hip joint. The participants attended five training sessions within 20 days. They walked carrying a load of 20.4 kg for 20 minutes with the exosuit powered and five minutes with the exosuit unpowered. Percentage change in net metabolic cost between the powered and unpowered conditions improved across sessions from −6.2 ± 3.9% (session one) to −10.3 ± 4.7% (session five), indicating a significant effect associated with training. The percentage change at session three (−10.5 ± 4.5%) was similar to the percentage change at session five, indicating that two 20-minute sessions may be sufficient for users to fully adapt and maximize the metabolic benefit provided by the exoskeleton. Retention was also tested measuring the metabolic reduction five months after the last training session. The percent change in metabolic cost during this session (−10.1 ± 3.2%) was similar to the last training session, indicating that the adaptations resulting in reduced metabolic cost are preserved. These outcomes are relevant when evaluating exoskeletons’ performance on naïve users, with a specific focus on hip extension assistance.</description><identifier>ISSN: 2045-2322</identifier><identifier>EISSN: 2045-2322</identifier><identifier>DOI: 10.1038/s41598-019-45914-5</identifier><identifier>PMID: 31278286</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>631/61 ; 639/166 ; 692/698/1671 ; Adaptation ; Adaptation, Physiological ; Ankle ; Biotechnology - methods ; Energy Metabolism - physiology ; Exoskeleton ; Exoskeleton Device ; Follow-Up Studies ; Gait - physiology ; Healthy Volunteers ; Hip ; Hip Joint - metabolism ; Humanities and Social Sciences ; Humans ; Male ; Metabolism ; Military Personnel ; multidisciplinary ; Robotics - instrumentation ; Robotics - methods ; Science ; Science (multidisciplinary) ; Training ; United States ; Walking ; Walking - physiology ; Weeds ; Young Adult</subject><ispartof>Scientific reports, 2019-07, Vol.9 (1), p.9779-10, Article 9779</ispartof><rights>The Author(s) 2019</rights><rights>2019. 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This work aimed to investigate energetic adaptations occurring over multiple training sessions, while walking with a soft exosuit assisting the hip joint. The participants attended five training sessions within 20 days. They walked carrying a load of 20.4 kg for 20 minutes with the exosuit powered and five minutes with the exosuit unpowered. Percentage change in net metabolic cost between the powered and unpowered conditions improved across sessions from −6.2 ± 3.9% (session one) to −10.3 ± 4.7% (session five), indicating a significant effect associated with training. The percentage change at session three (−10.5 ± 4.5%) was similar to the percentage change at session five, indicating that two 20-minute sessions may be sufficient for users to fully adapt and maximize the metabolic benefit provided by the exoskeleton. Retention was also tested measuring the metabolic reduction five months after the last training session. The percent change in metabolic cost during this session (−10.1 ± 3.2%) was similar to the last training session, indicating that the adaptations resulting in reduced metabolic cost are preserved. These outcomes are relevant when evaluating exoskeletons’ performance on naïve users, with a specific focus on hip extension assistance.</description><subject>631/61</subject><subject>639/166</subject><subject>692/698/1671</subject><subject>Adaptation</subject><subject>Adaptation, Physiological</subject><subject>Ankle</subject><subject>Biotechnology - methods</subject><subject>Energy Metabolism - physiology</subject><subject>Exoskeleton</subject><subject>Exoskeleton Device</subject><subject>Follow-Up Studies</subject><subject>Gait - physiology</subject><subject>Healthy Volunteers</subject><subject>Hip</subject><subject>Hip Joint - metabolism</subject><subject>Humanities and Social Sciences</subject><subject>Humans</subject><subject>Male</subject><subject>Metabolism</subject><subject>Military Personnel</subject><subject>multidisciplinary</subject><subject>Robotics - instrumentation</subject><subject>Robotics - methods</subject><subject>Science</subject><subject>Science (multidisciplinary)</subject><subject>Training</subject><subject>United States</subject><subject>Walking</subject><subject>Walking - 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Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Scientific reports</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Panizzolo, Fausto A.</au><au>Freisinger, Gregory M.</au><au>Karavas, Nikos</au><au>Eckert-Erdheim, Asa M.</au><au>Siviy, Christopher</au><au>Long, Andrew</au><au>Zifchock, Rebecca A.</au><au>LaFiandra, Michael E.</au><au>Walsh, Conor J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Metabolic cost adaptations during training with a soft exosuit assisting the hip joint</atitle><jtitle>Scientific reports</jtitle><stitle>Sci Rep</stitle><addtitle>Sci Rep</addtitle><date>2019-07-05</date><risdate>2019</risdate><volume>9</volume><issue>1</issue><spage>9779</spage><epage>10</epage><pages>9779-10</pages><artnum>9779</artnum><issn>2045-2322</issn><eissn>2045-2322</eissn><abstract>Different adaptation rates have been reported in studies involving ankle exoskeletons designed to reduce the metabolic cost of their wearers. This work aimed to investigate energetic adaptations occurring over multiple training sessions, while walking with a soft exosuit assisting the hip joint. The participants attended five training sessions within 20 days. They walked carrying a load of 20.4 kg for 20 minutes with the exosuit powered and five minutes with the exosuit unpowered. Percentage change in net metabolic cost between the powered and unpowered conditions improved across sessions from −6.2 ± 3.9% (session one) to −10.3 ± 4.7% (session five), indicating a significant effect associated with training. The percentage change at session three (−10.5 ± 4.5%) was similar to the percentage change at session five, indicating that two 20-minute sessions may be sufficient for users to fully adapt and maximize the metabolic benefit provided by the exoskeleton. Retention was also tested measuring the metabolic reduction five months after the last training session. The percent change in metabolic cost during this session (−10.1 ± 3.2%) was similar to the last training session, indicating that the adaptations resulting in reduced metabolic cost are preserved. These outcomes are relevant when evaluating exoskeletons’ performance on naïve users, with a specific focus on hip extension assistance.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>31278286</pmid><doi>10.1038/s41598-019-45914-5</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-3147-2700</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | 631/61 639/166 692/698/1671 Adaptation Adaptation, Physiological Ankle Biotechnology - methods Energy Metabolism - physiology Exoskeleton Exoskeleton Device Follow-Up Studies Gait - physiology Healthy Volunteers Hip Hip Joint - metabolism Humanities and Social Sciences Humans Male Metabolism Military Personnel multidisciplinary Robotics - instrumentation Robotics - methods Science Science (multidisciplinary) Training United States Walking Walking - physiology Weeds Young Adult |
| title | Metabolic cost adaptations during training with a soft exosuit assisting the hip joint |
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