WEKO3
アイテム
Estimation of oxygen cost of internal power during cycling exercise with changing pedal rate
http://hdl.handle.net/10228/5480
http://hdl.handle.net/10228/54804d967f35-7e75-4e62-895a-22008df448b2
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
27_133.pdf (99.1 kB)
|
|
| アイテムタイプ | 学術雑誌論文 = Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2015-08-31 | |||||
| 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 | journal article | |||||
| タイトル | ||||||
| タイトル | Estimation of oxygen cost of internal power during cycling exercise with changing pedal rate | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 著者 |
Tokui, Masato
× Tokui, Masato× 平木場, 浩二 |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | It has been reported that oxygen uptake (VO2) increases exponentially with levels of the pedal rate during cycling. The purpose of this study was therefore to test the hypothesis that the O2 cost for internal power output (Pint) exerted in exercising muscle itself would be larger than for an external power output (Pext) calculated from external load and pedal rate during cycling exercise under various conditions of Pint and Pext in a large range of pedal rates. The O2 cost (ΔVO2/ Δpower output) was investigated in three experiments that featured different conditions on a cycle ergometer that were carried out at the same levels of total power output (Ptot; sum of Pint and Pext) (Exp. 1), Pext (Exp. 2) and load (Exp. 3). Each experiment consisted of three exercise tests with three levels of pedal rate (40 rpm for a lower pedal rate: LP; 70–80 rpm for a moderate pedal rate: MP; and 100–120 rpm for a higher pedal rate: HP) lasting for 2–3 min of unloaded cycling followed by 4–5 min of loaded cycling. Blood lactate accumulations (2.3–3.4 mmol l−1) at the HP were significantly higher compared with the LP (0.6–0.9 mmol l−1) and MP (0.9–1.0 mmol l−1) except for the LP in Exp. 1. The VO2 (360–432 ml min−1 for LP, 479–644 ml min−1 for MP, 960–1602 ml min−1 for HP) during unloaded cycling in the three experiments increased exponentially with increasing pedal rates regardless of Pext=0. Moreover, the slope of the VO2-Pint (13.7 ml min−1 W−1) relation revealed a steeper inclination than that of the VO2-Pext (10.2 ml min−1 W−1) relation. We concluded that the O2 cost for Pint was larger than for Pext during the cycling exercises, indicating that the O2 cost for Ptot could be affected by the ratio of Pint to Ptot due to the levels of pedal rate. | |||||
| 書誌情報 |
Journal of Physiological Anthropology 巻 27, 号 3, p. 133-138, 発行日 2008 |
|||||
| 出版社 | ||||||
| 出版者 | 日本生理人類学会 | |||||
| DOI | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.2114/jpa2.27.133 | |||||
| NAID | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | NAID | |||||
| 関連識別子 | 110006684899 | |||||
| 著作権関連情報 | ||||||
| 権利情報 | Japan Society of Physiological Anthropology | |||||
| 著作権関連情報 | ||||||
| 権利情報 | 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 | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | pedal rate | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | internal work | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | metabolic cost | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | muscular efficiency | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | noncontractile processes | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | muscle fiber type | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| 査読の有無 | ||||||
| 値 | yes | |||||
| 研究者情報 | ||||||
| URL | https://hyokadb02.jimu.kyutech.ac.jp/html/288_ja.html | |||||
| 連携ID | ||||||
| 値 | 5211 | |||||
