{"id":74202,"date":"2023-03-09T11:47:47","date_gmt":"2023-03-09T02:47:47","guid":{"rendered":"https:\/\/www.waseda.jp\/inst\/research\/?p=74202"},"modified":"2023-03-09T11:47:47","modified_gmt":"2023-03-09T02:47:47","slug":"mechanical-lonkage-between-achilles-tendon-and-plantar-fascia-accounts-for-range-of-motion-on-human-ankle-foot-complex%ef%bc%88published-in-medicine-and-science-in-sports-and-exercise-january-2023","status":"publish","type":"post","link":"https:\/\/www.waseda.jp\/inst\/research\/news\/74202","title":{"rendered":"Mechanical Lonkage between Achilles Tendon and Plantar Fascia Accounts for Range of motion on human Ankle-foot Complex\uff08Published in Medicine and Science in Sports and Exercise, January 2023\uff09"},"content":{"rendered":"\n\n\n\n\n\n\n\n\n
Journal Title
\n\/\u63b2\u8f09\u30b8\u30e3\u30fc\u30ca\u30eb\u540d<\/td>\n		Medicine and Science in Sports and Exercise<\/td>\n<\/tr>\n
Publication Year and Month
\n\/\u63b2\u8f09\u5e74\u6708<\/td>\n		January, 2023<\/td>\n<\/tr>\n
Paper Title
\n\/\u8ad6\u6587\u30bf\u30a4\u30c8\u30eb<\/td>\n		Mechanical Lonkage between Achilles Tendon and Plantar Fascia Accounts for Range of motion on human Ankle-foot Complex<\/td>\n<\/tr>\n
DOI
\n\/\u8ad6\u6587DOI<\/td>\n		10.1249\/MSS.0000000000003020<\/a><\/td>\n<\/tr>\n
\u00a0Author of Waseda University
\n\/\u672c\u5b66\u306e\u8457\u8005<\/td>\n		SHIOTANI, Hiroto(Assistant Professor(without tenure), Faculty of Sport Sciences, School of Sport and Sciences):First Author, Corresponding Author<\/td>\n<\/tr>\n
Related Websites
\n\/\u95a2\u9023Web<\/td>\n		–<\/td>\n<\/tr>\n
Abstract
\n\/\u6284\u9332<\/td>\n		\n

Purpose<\/h3>\n

The human ankle\u2013foot complex possesses a passive range of motion (ROM) through changes in tibiocalcaneal (\u03b8<\/em>cal<\/sub>) and foot arch (\u03b8<\/em>arch<\/sub>) angles. Based on the anatomical linkage between the Achilles tendon (AT) and plantar fascia (PF), we hypothesized that AT and PF with different mechanical properties conjointly modulate the passive ROM of the human ankle\u2013foot complex. We examined the association of AT and PF stiffness with passive ankle\u2013foot ROM and further addressed differences between sexes.<\/p>\n

Methods<\/h3>\n

A series of sagittal magnetic resonance images of the foot and passive ankle plantar flexion torque were obtained for 20 men and 20 women with their ankle\u2013foot passively rotated from 30\u00b0 of plantar flexion to 20\u00b0 of dorsiflexion. Based on the measured changes in AT and PF lengths,\u00a0\u03b8<\/em>cal<\/sub>,\u00a0\u03b8<\/em>arch<\/sub>, and passive torque, AT and PF stiffness were determined.<\/p>\n

Results<\/h3>\n

Upon passive ankle dorsiflexion, AT and PF were lengthened; their length changes were inversely correlated. Men showed a stiffer AT, more compliant PF, less calcaneal rotation, and greater foot arch deformation compared with women. Furthermore, we found inverse correlations between AT stiffness and ROM of\u00a0\u03b8<\/em>cal<\/sub>, and between PF stiffness and ROM of\u00a0\u03b8<\/em>arch<\/sub>\u00a0in men and women.<\/p>\n

Conclusions<\/h3>\n

Passive AT and PF extensibility counter each other. AT and PF stiffness and passive ROM of ankle\u2013foot components were countered between sexes; however, associations between stiffness and passive ROM of the ankle\u2013foot complex were consistent between sexes. Our findings support the notion that the balanced mechanical interaction between the AT and PF can account for the passive ROM of the human ankle\u2013foot complex\u00a0in vivo<\/em>, and the differences between sexes.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Journal Title \/\u63b2\u8f09\u30b8\u30e3\u30fc\u30ca\u30eb\u540d Medicine and Science in Sports and Exercise Publication Year and Month \/\u63b2\u8f09\u5e74\u6708 January, […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[218,217],"class_list":["post-74202","post","type-post","status-publish","format-standard","hentry","tag-impact-en","tag-impact"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/posts\/74202","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/comments?post=74202"}],"version-history":[{"count":1,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/posts\/74202\/revisions"}],"predecessor-version":[{"id":74203,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/posts\/74202\/revisions\/74203"}],"wp:attachment":[{"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/media?parent=74202"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/categories?post=74202"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/tags?post=74202"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}