Oscillation in Tissue Oxygen Index During Recovery From Exercise

YANO T.; AFROUNDEH R.; SHIRAKAWA K.; LIAN C. S.; SHIBATA K.; XIAO Z.; YUNOKI T.

Title	en Oscillation in Tissue Oxygen Index During Recovery From Exercise
Creator	en YANO, T. NRID 1000080200559 en AFROUNDEH, R. en SHIRAKAWA, K. en LIAN, C. S. en SHIBATA, K. en XIAO, Z. en YUNOKI, T.
Accessrights	open access
Subject	Other en Tissue oxygen index Other en Oscillation Other en Recovery from exercise Other en Power spectra density Other en Blood pH NDC 780
Description	Abstract en It was hypothesized that an oscillation of tissue oxygen index (TOI) determined by near-infrared spectroscopy during recovery from exercise occurs due to feedback control of adenosine triphosphate and that frequency of the oscillation is affected by blood pH. In order to examine these hypotheses, we aimed 1) to determine whether there is an oscillation of TOI during recovery from exercise and 2) to determine the effect of blood pH on frequency of the oscillation of TOI. Three exercises were performed with exercise intensities of 30 % and 70 % peak oxygen uptake (Vo2peak) for 12 min and with exercise intensity of 70 % Vo2peak for 30 s. TOI during recovery from the exercise was analyzed by fast Fourier transform in order to obtain power spectra density (PSD). There was a significant difference in the frequency at which maximal PSD of TOI appeared (Fmax) between the exercises with 70 % Vo2peak for 12 min (0.0039±0 Hz) and for 30 s (0.0061±0.0028 Hz). However, there was no significant difference in Fmax between the exercises with 30 % (0.0043±0.0013 Hz) and with 70 % Vo2peak for 12 min despite differences in blood pH and blood lactate from the warmed fingertips. It is concluded that there was an oscillation in TOI during recovery from the three exercises. It was not clearly shown that there was an effect of blood pH on Fmax.
Publisher	en Institute of Physiology of the Czech Academy of Sciences
Date	Issued2015-10-08
Language	eng
Resource Type	journal article
Version Type	VoR
Identifier	HDL http://hdl.handle.net/2115/71266
Journal	PISSN 0862-8408 EISSN 1802-9973 NCID AA1081423X en Physiological Research Volume Number65 Issue Number2 Page Start259 Page End269
File	fulltext Physiol-Res-Oscillation.pdf 1.38 MB (application/pdf) Issued2015-10-08
Oaidate	2023-07-26