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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 >

Relationship between tissue oxygen index in skeletal muscle and oxygen uptake at pulmonary level

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Title: Relationship between tissue oxygen index in skeletal muscle and oxygen uptake at pulmonary level
Other Titles: 骨格筋内の組織酸素指数と肺レベルの酸素摂取量との関係
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: Oxygen tissue index
Heart rate
Oxygen uptake
Cross correlation
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: 27
End Page: 41
Abstract:  We examined whether the relationship between muscle oxygen consumption and lung oxygen uptake is established by the intervention of cardiac pumping. Oxygen intake (V・o2) and heart rate (HR) were determined breath-by-breath. The values were converted to 1-second values by a three-dimensional spine function. Tissue oxygen index (TOI) was determined per second from the vastus lateralis by using near-infrared spectroscopy. Exercise was performed for 10 seconds with an intensity of 70% of peak V・o2. A rest period of 10 minutes after exercise was set before the exercise and a recovery period of 20 minutes was set after the exercise. All 1-second values during the test were processed with a low pass filter (<0.05 Hz). Cross-correlation of the processed values was obtained. V・o2 rose during exercise and increased again during recovery. HR rose during exercise and declined during recovery. TOI decreased after exercise and increased during recovery. The maximum value of the cross-correlation between HR and V・o2 was 0.712 ± 0.112. The minimum cross-correlation value between TOI and HR was -0.398 ± 0.225. Double of the time difference between the highest value and the lowest value of HR and V・o2 or TOI and HR is the wavelength. It was 170 seconds (2.8 minutes). The results suggested that variation in TOI or its related substances in skeletal muscle (oscillation and level of the oscillation axis) is partly related to variation in cardiac pumping and that variation in the cardiac pump considerable affects variation of lung oxygen intake.
 骨格筋レベルの酸素消費と肺レベルの酸素摂取との関係が,心臓ポンプ作用の介入によって確立されるかどうかを調べた。酸素摂取量(V・o2)および心拍数(HR)は,3次元スパイン関数によって1秒値に変換された。近赤外分光法により,外側広筋から1秒ごとの組織酸素指数(TOI)を測定した。運動はピークV・o2の70%の強度で10秒間行った。その前後には,休憩10分と回復時間20分が設定された。試験中のすべての1秒値はローパスフィルタ(<0.05Hz)で処理されました。HRとV・o2との間の相互相関の最大値は0.712±0.112であった。 TOIとHRとの間の最小相互相関値は,-0.398±0.225であった。骨格筋内のTOIまたはその関連物質の変動(振動軸および揺動軸のレベル)は,部分的に心臓ポンプ作用の変動に関連し,心臓ポンプ作用の変動は肺酸素摂取量の変動にかなり影響すると示唆された。
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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