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Oscillation of oxygenation in skeletal muscle at rest and in light exercise

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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
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)
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)

Submitter: 矢野 徳郎

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