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Alteration of swing leg work and power during human accelerated sprinting
http://hdl.handle.net/2241/00146410
http://hdl.handle.net/2241/001464102592bf27-b24c-453e-928e-bac6b52c1908
名前 / ファイル | ライセンス | アクション |
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BO_6-5 (1.8 MB)
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Item type | Journal Article(1) | |||||
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公開日 | 2017-06-07 | |||||
タイトル | ||||||
タイトル | Alteration of swing leg work and power during human accelerated sprinting | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Nagahara, Ryu
× Nagahara, Ryu× Matsubayashi, Takeo× Matsuo, Akifumi× Zushi, Koji |
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著者別名 |
図子, 浩二
× 図子, 浩二 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | This study investigated changes in lower-extremity joint work and power during the swing phase in a maximal accelerated sprinting. Twelve male sprinters performed 60 m maximal sprints while motion data was recorded. Lower-extremity joint work and power during the swing phase of each stride for both legs were calculated. Positive hip and negative knee work (≈4.3 and ≈−2.9 J kg−1) and mean power (≈13.4 and ≈−8.7 W kg−1) during the entire swing phase stabilized or decreased after the 26.2±1.1 (9.69±0.25 m s−1) or 34.3±1.5 m mark (9.97±0.26 m s−1) during the acceleration phase. In contrast, the hip negative work and mean power during the early swing phase (≈7-fold and ≈3.7-fold increase in total), as well as the knee negative work and power during the terminal swing phase (≈1.85-fold and ≈2-fold increase in total), increased until maximal speed. Moreover, only the magnitudes of increases in negative work and mean power at hip and knee joints during the swing phase were positively associated with the increment of running speed from the middle of acceleration phase. These findings indicate that the roles of energy generation and absorption at the hip and knee joints shift around the middle of the acceleration phase as energy generation and absorption at the hip during the late swing phase and at the knee during early swing phase are generally maintained or decreased, and negative work and power at hip during the early swing phase and at knee during the terminal swing phase may be responsible for increasing running speed when approaching maximal speed. | |||||
書誌情報 |
Biology open 巻 6, 号 5, p. 633-641, 発行日 2017-05 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2046-6390 | |||||
PubMed番号 | ||||||
識別子タイプ | PMID | |||||
関連識別子 | 28396485 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1242/bio.024281 | |||||
権利 | ||||||
権利情報 | © 2017. Published by The Company of Biologists Ltd | |||||
権利 | ||||||
権利情報 | This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed. | |||||
著者版フラグ | ||||||
値 | publisher | |||||
出版者 | ||||||
出版者 | Company of Biologists |