{"id":2468,"date":"2016-09-28T02:55:00","date_gmt":"2016-09-28T06:55:00","guid":{"rendered":"https:\/\/www.med.unc.edu\/healthsciences\/research\/1475030050091-2\/"},"modified":"2018-10-30T11:11:57","modified_gmt":"2018-10-30T15:11:57","slug":"1475030050091-2","status":"publish","type":"post","link":"https:\/\/www.med.unc.edu\/healthsciences\/research\/1475030050091-2\/","title":{"rendered":"The importance of anterior center of mass velocity during gait on energy cost following stroke"},"content":{"rendered":"<p><!-- description --><\/p>\n<p class=\"lead\">Energy efficiency is a hallmark of healthy human walking, but can become impaired when the legs do not provide symmetric push-off. Our recent analysis of gait following stroke has identified a consistent mechanical asymmetry between the limbs, which is analogous to driving a car by alternatively slamming on the gas, then the brake with each step. Like poor gas mileage in a car, we propose that this is energetically costly to the human body, but can be fixed by providing appropriate forces to ensure smooth forward (anterior) progress of the body\u2019s center of mass (COM). Although gait requires the COM to maintain a \u2018nearly\u2019 constant anterior speed, nearly all literature on COM movement has focused on vertical fluctuations. Here, we will address an imposed force on the COM as a potential therapeutic target to restore optimal mechanics and energetics of gait for individuals post-stroke.<\/p>\n<div class=\"image-section\">\n<figure class=\"thumbnail wp-caption alignright\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/www.med.unc.edu\/healthsciences\/research\/wp-content\/uploads\/sites\/888\/2018\/10\/1475030050091-image2.jpeg\" alt=\"image2\" width=\"300\" height=\"200\" \/><figcaption class=\"caption wp-caption-text\"><\/figcaption><\/figure>\n<\/div>\n<div>\n<h2>Contact Person<\/h2>\n<p>Michael Lewek, PT, PhD 919-966-9732<\/p>\n<h2>Investigators and Key Personnel<\/h2>\n<p class=\" \">Principal Investigator: Michael Lewek<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p><!-- description --> <\/p>\n<p class='lead'>Energy efficiency is a hallmark of healthy human walking, but can become impaired when the legs do not provide symmetric push-off. Our recent analysis of gait following stroke has identified a consistent mechanical asymmetry between the limbs, which is analogous to driving a car by alternatively slamming on the gas, then the brake with each step. Like poor gas mileage in a car, we propose that this is energetically costly to the human body, but can be fixed by providing appropriate forces to ensure smooth forward (anterior) progress of the body\u2019s center of mass (COM). Although gait requires the COM to maintain a \u2018nearly\u2019 constant anterior speed, nearly all literature on COM movement has focused on vertical fluctuations. Here, we will address an imposed force on the COM as a potential therapeutic target to restore optimal mechanics and energetics of gait for individuals post-stroke.<\/p>\n","protected":false},"author":492,"featured_media":2469,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"layout":"","cellInformation":"","apiCallInformation":"","footnotes":"","_links_to":"","_links_to_target":""},"categories":[146,2,147],"tags":[11,85,153],"class_list":["post-2468","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aging-rehab-participation","category-news","category-research-tools-tech-methods","tag-adults","tag-michael-lewek","tag-rehabilitation","odd"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The importance of anterior center of mass velocity during gait on energy cost following stroke - Office of Research and Scholarship<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.med.unc.edu\/healthsciences\/research\/1475030050091-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The importance of anterior center of mass velocity during gait on energy cost following stroke - Office of Research and Scholarship\" \/>\n<meta property=\"og:description\" content=\"Energy efficiency is a hallmark of healthy human walking, but can become impaired when the legs do not provide symmetric push-off. Our recent analysis of gait following stroke has identified a consistent mechanical asymmetry between the limbs, which is analogous to driving a car by alternatively slamming on the gas, then the brake with each step. Like poor gas mileage in a car, we propose that this is energetically costly to the human body, but can be fixed by providing appropriate forces to ensure smooth forward (anterior) progress of the body\u2019s center of mass (COM). Although gait requires the COM to maintain a \u2018nearly\u2019 constant anterior speed, nearly all literature on COM movement has focused on vertical fluctuations. 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