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Comparison of Oxygen Uptake at the Onset of Decrement-Load and Constant-Load Exercise
Title: | Comparison of Oxygen Uptake at the Onset of Decrement-Load and Constant-Load Exercise |
Authors: | YANO, T. Browse this author | OGATA, H. Browse this author | MATSUURA, R. Browse this author | ARIMITSU, T. Browse this author | YUNOKI, T. Browse this author |
Keywords: | Heavy exercise | Moderate exercise | Oxygen debt | Oxygen uptake |
Issue Date: | 2007 |
Publisher: | Institute of Physiology, Czech Academy of Sciences |
Journal Title: | Physiological Research |
Volume: | 56 |
Start Page: | 169 |
End Page: | 174 |
Abstract: | The purpose of the present study was to examine whether the level of oxygen uptake (V.o2) at the onset of decrementload exercise (DLE) is lower than that at the onset of constant-load exercise (CLE), since power output, which is the target of V.o2 response, is decreased in DLE. CLE and DLE were performed under the conditions of moderate and heavy exercise intensities. Before and after these main exercises, previous exercise and post exercise were performed at 20 watts. DEL was started at the same power output as that for CLE and power output was decreased at a rate of 15 watts per min. V.o2 in moderate CLE increased at a fast rate and showed a steady state, while V.o2 in moderate DLE increased and decreased linearly. V.o2 at the increasing phase in DLE was at the same level as that in moderate CLE. V.o2 immediately after moderate DLE was higher than that in the previous exercise by 98±77.5 ml/min. V. o2 in heavy CLE increased rapidly at first and then slowly increased, while V.o2 in heavy DLE increased rapidly, showing a temporal convexity change, and decreased linearly. V.o2 at the increasing phase of heavy DLE was the same level as that in heavy CLE. V .o2 immediately after heavy DLE was significantly higher than that in the previous exercise by 156±131.8 ml/min. Thus, despite the different modes of exercise, V.o2 at the increasing phase in DLE was at the same level as that in CLE due to the effect of the oxygen debt expressed by the higher level of V.o2 at the end of DLE than that in the previous exercise. |
Type: | article |
URI: | http://hdl.handle.net/2115/51987 |
Appears in Collections: | 教育学院・教育学研究院 (Graduate School of Education / Faculty of Education) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 矢野 徳郎
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