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北海道大学大学院教育学研究院紀要 = Bulletin of Faculty of Education, Hokkaido University >
第135号 >

Difference between low and high intensity exercises in the amplitude of oscillation of tissue oxygen index.

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Title: Difference between low and high intensity exercises in the amplitude of oscillation of tissue oxygen index.
Other Titles: 低強度および高強度運動時の組織酸素指数の振動の差異
Authors: Yano, T1 Browse this author →KAKEN DB
Afroundeh, R2 Browse this author
Arimitsu, T3 Browse this author
Yunoki, T4 Browse this author →KAKEN DB
Authors(alt): 矢野, 德郎1
アフロンド, ロガイエ2
有光, 琢磨3
柚木, 孝敬4
Keywords: Tissue oxygen index
Amplitude of oscillation
Exercise intensity
Power spectral density
Issue Date: 23-Dec-2019
Publisher: 北海道大学大学院教育学研究院
Journal Title: 北海道大学大学院教育学研究院紀要
Journal Title(alt): Bulletin of Faculty of Education, Hokkaido University
Volume: 135
Start Page: 43
End Page: 55
Abstract:  Aim. We hypothesized that an increase in the interaction of the biochemical substance due to the high exercise intensity could increase the amplitude of oscillation in TOI. In order to test this hypothesis, we examined whether oscillation of the tissue oxygen index (TOI) during exercise was influenced by the difference between low and high intensity exercises.  Methods. Nine subjects performed low-intensity exercise (Low-E) and high-intensity exercise (High-E) for 12 min. TOI was measured from the vastus lateralis muscle by near-infrared spectroscopy. TOI from 3 min to 12 min during exercise was analyzed by fast Fourier analysis to obtain power spectral density (PSD). PSD was integrated in the low frequency range (<0.025 Hz).  Results. The maximal peak of PSD appeared at 0.0039 ± 0 Hz in Low-E and at 0.0048 ± 0.002 Hz in High-E. There was no significant difference in the maximal peak of PSD between the two exercises. PSD at 0.016 Hz during High-E (43 ± 33 %2/Hz) was significantly higher than that during Low-E (13 ±6 %2/Hz). The integrated PSD was significantly larger in High-E (2.0 ±1.6 %2) than in Low-E (0.9 ± 0.6 %2).  Conclusion. The results suggest that interactions among biochemical substances involved in oxidative metabolism occur more strongly in High-E than in Low-E.
Type: bulletin (article)
Appears in Collections:北海道大学大学院教育学研究院紀要 = Bulletin of Faculty of Education, Hokkaido University > 第135号

Submitter: 矢野 徳郎

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