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Title: 膝関節伸展位等尺性収縮時の股関節肢位と内側広筋筋活動
Other Titles: Effect of Hip Position on Vastus Medialis Activity during Isometric Knee Extension
Authors: 根地嶋, 誠 / 横山, 茂樹 / 大城, 昌平
Authors (alternative): Nejishima, Makoto / Yokoyama, Shigeki / Ohgi, Shohei
Issue Date: 20-Oct-2004
Publisher: 社団法人日本理学療法士協会
Citation: 理学療法学. 31(6), p.359-363: 2004
Abstract: 本研究は, 外部負荷のない端座位膝関節伸展位での等尺性収縮において, 股関節内外転および内外旋肢位の組み合わせが大腿四頭筋, 特に内側広筋の筋活動に及ぼす影響を検討した。対象は健常男性11名であった。被験筋は右側の大腿直筋, 内側広筋, 外側広筋の3筋とした。肢位の組み合わせは, 股関節内外転中間位での(1)内外旋中間位, (2)20度内旋位, (3)20度外旋位, および股関節20度外転位での(4)内外旋中間位, (5)20度内旋位, (6)20度外旋位の6肢位とした。各肢位にて膝関節伸展位での最大随意等尺性収縮時の筋電図を測定し, 積分値を算出した。その結果, 内側広筋(VM)/外側広筋(VL)比は, 股関節外転外旋位が内外転内外旋中間位より有意に高かった。股関節外転外旋位での膝伸展位等尺性収縮運動は, 他の肢位と比べて内側広筋の筋活動を選択的に増加させることを示唆した。 / This study analyzed the relationship between vastus medialis (VM) activity and hip position in knee extension isometric exercise. Study subjects were 11 healthy adult male volunteers. Surface electromyography was recorded during the contraction of VM, vastus lateralis (VL) and rectus femoris. The subjects performed the maximal isometric knee extension In a sitting position on a bed. Electromyographic activity of these muscles were compared in six hip positions; neutral, external and internal rotation with O and 20 degree abduction, respectively. The VM/VL ratio of the external rotation with 20 degree abduction was significantly greater than that In the neutral position with O degree abduction. This finding suggests that VM may be selectively strengthened by performing external hip rotation with abduction during isometric contraction exercise with knee extension.
Keywords: 内側広筋 / 股関節肢位 / 筋電図
URI: http://hdl.handle.net/10069/21208
ISSN: 02893770
Relational Links: http://ci.nii.ac.jp/naid/110004014938/
Rights: 社団法人日本理学療法士協会 / 本文データは学協会の許諾に基づきCiNiiから複製したものである
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/21208

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