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Oscillation of oxygenation in skeletal muscle at rest and in light exercise
| Title: | Oscillation of oxygenation in skeletal muscle at rest and in light exercise |
| Authors: | Yano, T.1 Browse this author →KAKEN DB | | Lian, C-S Browse this author | | Arimitsu, T. Browse this author | | Yamanaka, R. Browse this author | | Afroundeh, R. Browse this author | | Shirakawa, K. Browse this author | | Yunoki, T. Browse this author |
| Authors(alt): | Yano, Tokuo1 |
| Keywords: | oxygenation | | oscillation | | exercise | | near-infrared spectroscopy | | power spectrum density |
| Issue Date: | 16-May-2013 |
| Publisher: | Akademiai Kiado |
| Journal Title: | Acta physiologica Hungarica |
| Volume: | 100 |
| Start Page: | 312 |
| End Page: | 320 |
| Publisher DOI: | 10.1556/APhysiol.100.2013.007 |
| PMID: | 23681050 |
| Abstract: | The aim of the present study was to compare the frequency of oxygenation determined in the vastus lateralis by near-infrared spectroscopy (NIRS) in light exercise with that at rest. A subject rested in a recumbent position for 5 min and changed body position to a sitting position on a cycle ergometer for 9 min. Then exercise with low intensity (work rate of 60% of maximal oxygen uptake) was carried out for 30 min. Total hemoglobin and myoglobin (THb/Mb) suddenly decreased after the start of exercise and gradually increased until 6 min. Oxygenated hemoglobin and myoglobin (Hb/MbO2) suddenly decreased and returned to a steady state after the start of exercise. The difference between Hb/MbO2 and THb/Mb showed a sudden decrease and then a steady state. This difference was analyzed by fast Fourier transform. The peak frequencies of the power spectrum density (PSD) were 0.0169 + 0.0076 Hz at rest and 0.0117 + 0.0042 Hz in exercise. The peak frequency of PSD was significantly decreased in exercise. In exercise, the range of frequencies was expanded. It is concluded that there are oscillations at rest as well as in exercise and that the frequency of peak PSD becomes lower in exercise than at rest. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/52988 |
| 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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