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Behavior of human m.gastrocnemius during explosive stretch-shortening cycle movement investigated by ultrasonography
http://hdl.handle.net/10723/3135
http://hdl.handle.net/10723/31356ec1ed12-3a4e-4b51-a60c-4d26adaf5112
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
karuchuru_2-1_9-21.pdf (2.1 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||
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| 公開日 | 2017-07-12 | |||||||
| タイトル | ||||||||
| タイトル | Behavior of human m.gastrocnemius during explosive stretch-shortening cycle movement investigated by ultrasonography | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Ultrasonography | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Muscle-tendon complex | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Gastrocnemius | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Elastic energy | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Stretchshortening cycle | |||||||
| 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 | |||||||
| 著者 |
KUROKAWA, Sadao
× KUROKAWA, Sadao
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | In vivo dynamics of fascicles and tendinous structures of human m. gastrocnemius medialis (MG) was investigated using ultrasonography during the stretchshortening cycle movement. Eight male subjects performed drop jumping (DJ: typical stretch shortening movement) from the height of 0.2m. During the downward phase, fascicles shortened by 7.1mm (10.6% relative to the length in the erect standing position) with 25.0mm (6.8%) of stretch in the tendinous structures although the muscle-tendon complex (MTC) lengthened by 17.0mm (4.0%) . During the upward phase, the fascicles shortened only by 3.1mm (4.7%) while the MTC rapidly shortened by 24.0mm (6.5%). Elastic energy stored in the tendinous structures during the downward phase (7.6 ± 0.45J) was partly provided from the work performed by the fascicles (2.6 ± 0.39J). In the following upward phase, 76% of the elastic energy stored in the tendinous structures (5.8 ± 0.6J) was reutilized, which accounted for 75% of the mechanical work performed by the MTC. The present results demonstrate that the fascicles operated not as a work generator, but as a force controller. Rapid recoil of the tendinous structures enhanced the shortening velocity of the MTC, which allowed the muscle fibers to behave in a quasi-isometric manner in the upward phase. In addition, it was suggested that potentiation of the contractile machinery or stretch reflexes may not be contributing to the motion generation during the DJ performed in this study. |
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| 内容記述 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 【論文／Articles】 | |||||||
| 書誌情報 |
明治学院大学教養教育センター紀要 : カルチュール = The MGU journal of liberal arts studies : Karuchuru 巻 2, 号 1, p. 9-21, 発行日 2008-03-31 |
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| ISSN | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 1881-8099 | |||||||
| 書誌レコードID | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AA12200206 | |||||||
| 著者版フラグ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| 出版者 | ||||||||
| 出版者 | 明治学院大学教養教育センター | |||||||
| 資源タイプ | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | Article | |||||||
