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Hokkaido University Collection of Scholarly and Academic Papers >
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Peer-reviewed Journal Articles, etc >
Coherence between oscillations in the cardiorespiratory system and tissue oxygen index in muscle recovering from intensive exercise in humans
| Title: | Coherence between oscillations in the cardiorespiratory system and tissue oxygen index in muscle recovering from intensive exercise in humans |
| Authors: | Usuda, Noboru Browse this author | | Shirakawa, Kazuki Browse this author | | Hatano, Kei Browse this author | | Abe, Masaki O. Browse this author →KAKEN DB | | Yunoki, Takahiro Browse this author →KAKEN DB | | Yano, Tokuo Browse this author →KAKEN DB |
| Keywords: | Coherence | | Cardiorespiratory system | | Tissue oxygen index | | Oscillation | | Recovery from exercise |
| Issue Date: | Sep-2019 |
| Publisher: | Akadémiai Kiadó |
| Journal Title: | Physiology International |
| Volume: | 106 |
| Issue: | 3 |
| Start Page: | 261 |
| End Page: | 271 |
| Publisher DOI: | 10.1556/2060.106.2019.25 |
| PMID: | 31602997 |
| Abstract: | It has been shown that the tissue oxygen index (TOI) measured by near-infrared spectroscopy oscillates at very low frequencies during recovery after exercise and that this oscillation is derived from interactions among biochemical substances involved in oxidative metabolism in skeletal muscle. As a further step, we examined whether TOI in muscle interacts through oscillation with factors related to oxygen in the cardiorespiratory system. For this examination, coherence and phase difference between the TOI in the vastus lateralis and heart rate (HR) and between TOI and arterial oxygen saturation (SpO2) were sequentially determined during recovery (2–60 min) after severe cycle exercise with a workload of 7.5% of body weight for 20 s. Significant coherence between TOI and HR was obtained in the very low-frequency band (approximate range: 0.002–0.03 Hz) and in the low-frequency band (approximate range: 0.06–0.12 Hz). The phase difference was negative in the low-frequency band and positive in the very low-frequency band. The coherence between TOI and SpO2 was significant in the very low-frequency band. The phase difference was negative. There were no sequential changes in these coherences and phase differences. The results suggest that TOI in skeletal muscle interrelates with factors related to the heart and lungs. |
| Rights: | The archived file is not the final published version of the paper. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/75786 |
| 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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