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Coherence between tissue oxygen indexes in vastus lateralis and gastrocnemius in repetition of impulse exercise with high intensity

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Title: Coherence between tissue oxygen indexes in vastus lateralis and gastrocnemius in repetition of impulse exercise with high intensity
Authors: Yano, T. Browse this author →KAKEN DB
Widjaja, W. Browse this author
Shirakawa, K. Browse this author
Lian, C-S Browse this author
Xiao, Z. Browse this author
Yunoki, T. Browse this author →KAKEN DB
Keywords: coherence
phase difference
tissue oxygen index
impulse exercise
oscillation
Issue Date: Jun-2015
Publisher: Akadémiai Kiadó
Journal Title: Acta physiologica hungarica
Volume: 102
Issue: 2
Start Page: 189
End Page: 196
Publisher DOI: 10.1556/036.102.2015.2.9
PMID: 26100308
Abstract: The purpose of this study was to determine whether tissue oxygen indices (TOIs) in two muscle groups oscillated and were synchronized in repetition of impulse exercise with high intensity. Five impulse exercises of 400 watts for 10 s were repeated with intervals of 6 min. During this period, TOI was determined by near-infrared spectroscopy in the vastus lateralis and gastrocnemius muscles. TOIs in the two muscles oscillated at rest. The TOIs rapidly decreased during each impulse exercise and then recovered and overshot after each impulse. The TOIs oscillated during each interval period. During this test period, coherent and phase differences were determined. There was high coherence between TOIs in the two muscles with a peak value at 0.019 Hz. There was a phase difference of -45 +/- 32.4 degrees between TOIs in the two muscles. This phase difference corresponded to about 6 s in time scale. It seemed from this time delay that impulse exercise was not a trigger factor for the starting point of TOIs in the two muscles. It has been concluded that TOIs oscillate and are synchronized between two muscles in repetition of impulse exercise with high intensity.
Type: article
URI: http://hdl.handle.net/2115/59553
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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