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Oscillation in O2 uptake in impulse exercise
| Title: | Oscillation in O2 uptake in impulse exercise |
| Authors: | Yano, T. Browse this author →KAKEN DB | | Afroundeh, R. Browse this author | | Yamanaka, R. Browse this author | | Arimitsu, T. Browse this author | | Lian, C.S. Browse this author | | Shirakawa, K. Browse this author | | Yunoki, T. Browse this author →KAKEN DB |
| Keywords: | O2 uptake | | O2 consumption | | heart rate | | impulse exercise | | oscillation | | power spectral density |
| Issue Date: | Jun-2014 |
| Publisher: | Akadémiai Kiadó |
| Journal Title: | Acta Physiologica Hungarica |
| Volume: | 101 |
| Issue: | 2 |
| Start Page: | 143 |
| End Page: | 149 |
| Publisher DOI: | 10.1556/APhysiol.101.2014.2.2 |
| PMID: | 24901075 |
| Abstract: | The purpose of the present study was to examine 1) whether O2 uptake (VO2) oscillates during light exercise and 2) whether the oscillation is enhanced after impulse exercise. After resting for 1 min on a bicycle seat, subjects performed 5-min pre-exercise with 25 watts work load, 10-s impulse exercise with 200 watts work load and 15-min post exercise with 25 watts work load at 80 rpm. VO2 during pre-exercise significantly increased during impulse exercise and suddenly decreased and re-increased until 23 s after impulse exercise. In the cross correlation between heart rate (HR) and VO2 after impulse exercise, VO2 strongly correlated to HR with a time delay of -4 s. Peak of power spectral density (PSD) in HR appeared at 0.0039 Hz and peak of PSD in VO2 appeared at 0.019 Hz. The peak of the cross power spectrum between VO2 and HR appeared at 0.0078 Hz. The results suggested that there is an oscillation in O2 uptake during light exercise that is associated with the oscillation in O2 consumption in active muscle. The oscillation is enhanced not only by change in O2 consumption but also by O2 content transported from active muscle to the lungs. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/59558 |
| 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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