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Response of end tidal CO2 pressure to impulse exercise
| Title: | Response of end tidal CO2 pressure to impulse exercise |
| Authors: | Yano, T. Browse this author →KAKEN DB | | Afroundeh, R. Browse this author | | Yamanak, R. Browse this author | | Arimitsu, T. Browse this author | | Lian, C-S Browse this author | | Shirkawa, K. Browse this author | | Yunoki, T. Browse this author →KAKEN DB |
| Keywords: | end-tidal CO2 pressure | | oscillation | | heart rate | | ventilation | | impulse exercise |
| Issue Date: | Mar-2014 |
| Publisher: | Akadémiai Kiadó |
| Journal Title: | Acta Physiologica Hungarica |
| Volume: | 101 |
| Issue: | 1 |
| Start Page: | 103 |
| End Page: | 111 |
| Publisher DOI: | 10.1556/APhysiol.100.2013.018 |
| PMID: | 24311228 |
| Abstract: | The purpose of the present study was to examine how end tidal CO2 pressure (PETCO2) is controlled in impulse exercise. After pre-exercise at 25 watts for 5 min, impulse exercise for 10 sec with 200 watts followed by post exercise at 25 watts was performed. Ventilation ((V) over dotE) significantly increased until the end of impulse exercise and significantly re-increased after a sudden decrease. Heart rate (HR) significantly increased until the end of impulse exercise and then decreased to the pre-exercise level. PETCO2 remained constant during impulse exercise. PETCO2 significantly increased momentarily after impulse exercise and then significantly decreased to the pre-exercise level. PETCO2 showed oscillation. The average peak frequency of power spectral density in PETCO2 appeared at 0.0078 Hz. Cross correlations were obtained after impulse exercise. The peak cross correlations between (V) over dotE and PETCO2, HR and PETCO2, and (V) over dotE and HR were 0.834 with a time delay of -7 sec, 0.813 with a time delay of 7 sec and 0.701 with a time delay of -15 sec, respectively. We demonstrated that PETCO2 homeodynamics was interactively maintained by PETCO2 itself, CO2 transportation (product of cardiac output and mixed venous CO2 content) into the lungs by heart pumping and CO2 elimination by ventilation, and it oscillates as a result of their interactions. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/55343 |
| 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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