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  1. 広島大学の刊行物
  2. Hiroshima Journal of Medical Sciences
  3. 49巻4号

The Main Factor Causing Prolonged Reaction Time on Force Producing Process Following Anterior Cruciate Ligament Reconstruction

https://hiroshima.repo.nii.ac.jp/records/2013493
https://hiroshima.repo.nii.ac.jp/records/2013493
a24e8fc2-08c3-46e8-8eee-d0bf935bcc1f
名前 / ファイル ライセンス アクション
HiroshimaJMedSci_49_145.pdf HiroshimaJMedSci_49_145.pdf (701.8 KB)
Item type デフォルトアイテムタイプ_(フル)(1)
公開日 2023-03-18
タイトル
タイトル The Main Factor Causing Prolonged Reaction Time on Force Producing Process Following Anterior Cruciate Ligament Reconstruction
言語 en
作成者 Kaneko, Fuminari

× Kaneko, Fuminari

en Kaneko, Fuminari

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Onari, Kiyoshi

× Onari, Kiyoshi

en Onari, Kiyoshi

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Kawaguchi, Kotaro

× Kawaguchi, Kotaro

en Kawaguchi, Kotaro

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Tsukisaka, Kazuhiro

× Tsukisaka, Kazuhiro

en Tsukisaka, Kazuhiro

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
主題
主題Scheme Other
主題 Anterior Cruciate Ligament
主題
主題Scheme Other
主題 Electromechanical delay
主題
主題Scheme Other
主題 Disuse
主題
主題Scheme Other
主題 Electromyography
主題
主題Scheme NDC
主題 490
内容記述
内容記述 This study investigated the electromechanical properties of atrophied human quadriceps femoris muscle during a voluntarily elicited maximal isometric contraction (MVC) and a peripherally stimulated twitch contraction. Nineteen patients were recruited 2-3 months following a unilateral anterior cruciate ligament (ACL) reconstruction. Both the involved leg as well as the uninvolved leg were studied. Maximal twitch response was elicited and surface electromyograms (EMG) were recorded from the vastus lateralis. Total reaction time (TRT) for both MVC and twitch on involved leg was prolonged (251.47 msec, 26.01 msec). This prolongation suggests an extended lag in avoiding injury such as during sports. Pre-motor time during both MVC and twitch (PMTmvc, PMTtwitch) did not differ between both groups. Electromechanical delay during MVC (EMDmvc) was prolonged on involved leg (53.42 msec), and also evoked twitch EMD (EMDtwitch) (20.04 msec) as compared to the opposit side. Prolonged EMDtwitch may be due to a decrease in stiffness of the series elastic component, changes of peripheral muscle composition to containing more slow type muscle fibers, or a decrease in function of the excitation-contraction (E-C) coupling process. A prolonged EMDtwitch can also explain the prolonged EMDmvc. These findings also suggested that prolonged TRTmvc to visual stimulus during MVC in atrophied human quadriceps femoris muscle after disuse was principally due to prolongation of EMDmvc. Prolonged EMDmvc may have resulted from decreased muscle stiffness, which was evident in the prolongation of the EMDtwitch.
言語 en
出版者
出版者 Hiroshima University Medical Press
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ departmental bulletin paper
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0018-2052
収録物識別子
収録物識別子タイプ NCID
収録物識別子 AA00664312
開始ページ
開始ページ 145
書誌情報 Hiroshima Journal of Medical Sciences
Hiroshima Journal of Medical Sciences

巻 49, 号 4, p. 145-151, 発行日 2000-12
旧ID 37717
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