
{"id":3176,"date":"2019-10-21T11:32:48","date_gmt":"2019-10-21T11:32:48","guid":{"rendered":"https:\/\/www.editage.com\/insights\/new-lightweight-robotic-suit-to-increase-performance-of-people-with-restricted-mobility\/"},"modified":"2025-01-15T06:31:14","modified_gmt":"2025-01-15T06:31:14","slug":"new-lightweight-robotic-suit-increase-performance-people-restricted-mobility","status":"publish","type":"post","link":"https:\/\/www.editage.com\/insights\/new-lightweight-robotic-suit-increase-performance-people-restricted-mobility","title":{"rendered":"New lightweight robotic suit to increase performance of people with restricted mobility"},"content":{"rendered":"<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">While walking may not seem like a burden for most people, for others, this simple task can often feel exhausting. For patients recovering from surgery or stroke, those with Parkinson\u2019s Disease, those with restricted mobility, and even for soldiers or firemen carrying heavy loads over difficult terrain, walking or running can be a struggle. Many researchers have pondered over this problem over the years, developing a number of external devices that,<\/span> <span style=\"font-family:&quot;Calibri&quot;,sans-serif\">once worn by users<\/span><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">, <\/span><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">allow them to move, walk, and run much more easily than they normally would. A variety of these \u201crobotic exoskeletons\u201d or robotic suits have been developed over the years, with an aim to decrease users\u2019 energy expenditure (or metabolic rate) when walking and running. So far, however, as Prof Giuk Lee from Chung-Ang University says, \u201cRobotic exoskeletons tend to be bulky and heavy; and while walking experiments have shown promising results, the energy spent running with the added weight of the device outweighs the benefits of robotic assistance.\u201d <\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">The problem, as Prof Lee and colleagues explain in their <span class=\"MsoHyperlink\" style=\"color:blue\"><span style=\"text-decoration:underline\"><a href=\"https:\/\/science.sciencemag.org\/content\/365\/6454\/668\" style=\"color:blue; text-decoration:underline\">paper published in <i>Science<\/i><\/a><\/span><\/span>, lies in the fact that \u201cWalking and running have fundamentally different biomechanics, which makes it challenging to develop devices that assist both gaits.\u201d Tackling this challenge, the scientists showcase their newly developed exosuit, mostly made of a fabric vest, belt, and thigh wraps, just like clothes that we wear in everyday life. These components are connected by wires, and fitted with batteries and a motor-like device (an actuator). The device weighs just 5 kg, conveniently fitted around the waist to assist hip extension muscles and allow a greater range of movement. What\u2019s more, this exosuit can switch the assistance mode automatically between walking and running gaits to achieve maximum efficiency of assistance. The scientists tested their prototype on treadmills and on outdoor courses with different terrains to examine the energy savings achieved by the exosuits in different conditions. They used an algorithm to classify gait (walking or running), which provided feedback to the device and adjusted the assistance mode accordingly. This allowed the exosuit to match the movement initiated by the actuator to the gait identified by the algorithm, and therefore to maximize energy savings. Indoor and outdoor testing revealed that the algorithm was able to correctly identify walking and running gaits more than 99.98% of the time.<\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><img decoding=\"async\" alt=\"Default Alt text\" class=\"responsive\" data-file_info=\"%7B%22fid%22:%229206%22,%22view_mode%22:%22default%22,%22fields%22:%7B%22format%22:%22default%22,%22field_file_image_alt_text%5Bund%5D%5B0%5D%5Bvalue%5D%22:%22Default%20Alt%20text%22,%22field_file_image_title_text%5Bund%5D%5B0%5D%5Bvalue%5D%22:%22Default%20Title%20Text%22,%22field_image_tags%5Bund%5D%5Btextfield%5D%22:%22%22,%22field_image_tags%5Bund%5D%5Bvalue_field%5D%22:%22%5C%22%5C%22%5C%22%5C%22%22%7D,%22type%22:%22media%22%7D\" src=\"https:\/\/insights.cactusglobal.com\/sites\/default\/files\/Untitled1.png\" style=\"\" title=\"Default Title Text\" \/><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Once they had confirmed the algorithm\u2019s accuracy, the scientists looked at the metabolic savings achieved by the exosuit\u2019s assistance functionalities. They found that exosuit assistance decreased the energy cost of walking at a speed of 1.5 meters per second (4.8 km per hour) by 9.3%, equivalent to the user shedding off 7.4 kg. They were also successful in securing energy savings during running tasks (speed of 2.5 meters per second or 9 km per hour), where the assistance function reduced metabolic rate by 4%, equivalent to a weight loss of 5.7 kg. Such energy savings might seem insignificant, but according to Prof Lee and colleagues, \u201cAlthough the changes in metabolic rate are relatively modest, they are of similar magnitude to those that have been proven sufficient to improve maximum walking and running performance. Therefore, we think that these energy savings could result in proportional increases in maximal performance, for example, over a cross-country course.\u201d Finally, unlike previous exosuits, which relied heavily on knee function, this new device uses hip extension to drive the leg movement, making the exosuits particularly relevant for above-knee amputees and other people lacking complete knee function. By harnessing the power of the hip extension, users of this robotic suit will be able to achieve higher athletic performance in a variety of terrain, seamlessly switching between running and walking as needed. <\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">To conclude, Prof Lee says, \u201cWe are expecting that this \u2018wearable robot\u2019 will have many uses, such as in aiding rehabilitation training for senior patients and enhancing the work efficiency of soldiers or firemen. In the long term, we envision this exosuit as hanging in a closet all the time, just like the clothes we wear every day.\u201d \u00a0<\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><b><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Reference<\/span><\/b><\/span><\/span><\/p>\n<table class=\"Table\" style=\"border-collapse:collapse; border:undefined\">\n<tbody>\n<tr>\n<td style=\"width:219.75pt; padding:0in 0in 0in 0in\" valign=\"top\" width=\"293\">\n<p style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-size:11.0pt\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Title of original paper:<\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"width:231.55pt; padding:0in 0in 0in 0in\" valign=\"top\" width=\"309\">\n<p style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><i><span style=\"font-size:11.0pt\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Reducing the metabolic rate of walking and running with a versatile, portable exosuit<\/span><\/span><\/i><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width:219.75pt; padding:0in 0in 0in 0in\" valign=\"top\" width=\"293\">\n<p style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-size:11.0pt\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">DOI:<\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-size:11.0pt\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Name of author:<\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-size:11.0pt\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Affiliation:<\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"width:231.55pt; padding:0in 0in 0in 0in\" valign=\"top\" width=\"309\">\n<p style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span class=\"MsoHyperlink\" style=\"color:blue\"><span style=\"text-decoration:underline\"><i><span style=\"font-size:11.0pt\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\"><a href=\"https:\/\/www.doi.org\/10.1126\/science.aav7536\" style=\"color:blue; text-decoration:underline\">https:\/\/www.doi.org\/10.1126\/science.aav7536<\/a><\/span><\/span><\/i><\/span><\/span><i> <\/i><\/span><\/span><\/p>\n<p style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><i><span style=\"font-size:11.0pt\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Giuk Lee <\/span><\/span><\/i><\/span><\/span><\/p>\n<p style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><i><span style=\"font-size:11.0pt\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Chung-Ang University<\/span><\/span><\/i><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p class=\"Default\" style=\"margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p class=\"Default\" style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:Calibri,sans-serif\"><span style=\"color:black\"><b>About <\/b><b>Chung-Ang University<\/b><\/span><\/span><\/span><\/p>\n<p class=\"Default\" style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:Calibri,sans-serif\"><span style=\"color:black\"><a href=\"https:\/\/neweng.cau.ac.kr\/index.do\">Chung-Ang University<\/a> is a private comprehensive research university located in Seoul, South Korea. It was started as a kindergarten in 1918 and attained university status in 1953. It is fully accredited by the Ministry of Education of Korea. Chung-Ang University conducts research activities under the slogan of \u201cJustice and Truth.\u201d Its new vision for completing 100 years is \u201cThe Global Creative Leader.\u201d Chung-Ang University offers undergraduate, postgraduate, and doctoral programs, which encompass a law school, management program, and medical school; it has 16 undergraduate and graduate schools each. Chung-Ang University\u2019s culture and arts programs are considered the best in Korea.\u00a0 \u00a0<\/span><\/span><\/span><\/p>\n<p class=\"Default\" style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:Calibri,sans-serif\"><span style=\"color:black\">\u00a0\u00a0 \u00a0<\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:Calibri,sans-serif\"><span style=\"color:black\"><b>About Professor Giuk Lee from Chung-Ang University<\/b><\/span><\/span><\/span><\/p>\n<p class=\"Default\" style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:Calibri,sans-serif\"><span style=\"color:black\">Dr Giuk Lee is an assistant professor at Chung-Ang University\u2019s School of Mechanical Engineering in Seoul, South Korea. After being awarded a PhD from Seoul National University in 2014, he worked as a senior researcher at Seoul National University, then as a postdoc at the Korea Institute of Science and Technology and Harvard University. His research interests revolve around developing wearable robotic exosuits to help people with restricted mobility achieve a greater performance. His publication record includes 14 journal articles and 21 international conference papers.<\/span><\/span><\/span><\/p>\n<p class=\"Default\" style=\"margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p class=\"Default\" style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:Calibri,sans-serif\"><span style=\"color:black\"><strong>Media contact<\/strong>: <a href=\"mailto:giuklee@cau.ac.kr\">giuklee@cau.ac.kr<\/a>\u00a0<\/span><\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>While walking may not seem like a burden for most people, for others, this simple task can often feel exhausting. For patients recovering from surgery or stroke, those with Parkinson\u2019s Disease, those with restricted mobility, and even for soldiers or firemen carrying heavy loads over difficult terrain, walking or running can be a struggle. Many [&hellip;]<\/p>\n","protected":false},"author":1152,"featured_media":33313,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[2435],"tags":[2482],"new_categories":[],"new_tags":[],"series":[],"class_list":["post-3176","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-trending-research","tag-science-update"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>New lightweight, portable robotic suit to increase running and walking performance | Editage Insights<\/title>\n<meta name=\"description\" content=\"A new study presenting a revolutionary robotic mobility-assistance suit was published in the journal Science by researchers from Chung-Ang University\" \/>\n<meta name=\"robots\" content=\"index, follow, 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