Muscle deoxygenation and its heterogeneity changes after endurance training

Ryotaro Kime, Masatsugu Niwayama, Yasuhisa Kaneko, Shun Takagi, Sayuri Fuse, Takuya Osada, Norio Murase, Toshihito Katsumura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The purpose of this study was to elucidate the time course of muscle deoxygenation and its heterogeneity changes through endurance training. Nine healthy untrained male participated in this study. The subjects performed a ramp incremental cycle exercise protocol to estimate VO2peak and muscle tissue oxygen saturation (SmO2) distribution in the VL muscle before and after 3 (3 wk-T) and 6 weeks of endurance training (6 wk-T). The probe of multi-channel near infrared spatially resolved spectroscopy was attached to the left vastus lateralis muscle along the direction of the long axis. The subjects performed cycle exercise at 60 % of VO2peak for 30 min/day, 3 days/week as the endurance training. After the training, VO2peak at 3 wk-T and 6 wk-T were significantly increased compared to pre-training (Pre-T) and VO2peak at 6 wk-T was significantly increased compared to 3 wk-T. Mean SmO2 within measurement sites at VO2peak was significantly decreased after 3 wk-T and 6 wk-T compared to Pre-T, but mean SmO2 was not significantly different between 3 wk-T and 6 wk-T. Conversely, the heterogeneity of the SmO2 during exercise was not significantly changed through endurance training. A significantly negative correlation was found between ΔVO2 and ΔSmO2 after the first 3 weeks of endurance training. In contrast, no correlation was found between ΔVO2 and ΔSmO2 after the last 3 weeks of endurance training. These results suggest that the enhanced muscle O2 availability may be one of the primary factors in increasing VO2peak after the first 3 weeks of endurance training.

Original languageEnglish
Title of host publicationOxygen Transport to Tissue XXXVIII
PublisherSpringer New York LLC
Pages275-281
Number of pages7
Volume923
ISBN (Print)9783319388083
DOIs
Publication statusPublished - 2016
Event43rd Annual Meeting of the International Society on Oxygen Transport to Tissue, ISOTT 2015 - Wuhan, China
Duration: 2015 Jul 112015 Jul 16

Publication series

NameAdvances in Experimental Medicine and Biology
Volume923
ISSN (Print)00652598
ISSN (Electronic)22148019

Other

Other43rd Annual Meeting of the International Society on Oxygen Transport to Tissue, ISOTT 2015
CountryChina
CityWuhan
Period15/7/1115/7/16

Keywords

  • Cycle exercise
  • Near infrared spectroscopy
  • Oxygen uptake
  • Tissue oxygen saturation
  • Vastus lateralis

ASJC Scopus subject areas

  • Medicine(all)
  • Biochemistry, Genetics and Molecular Biology(all)

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  • Cite this

    Kime, R., Niwayama, M., Kaneko, Y., Takagi, S., Fuse, S., Osada, T., Murase, N., & Katsumura, T. (2016). Muscle deoxygenation and its heterogeneity changes after endurance training. In Oxygen Transport to Tissue XXXVIII (Vol. 923, pp. 275-281). (Advances in Experimental Medicine and Biology; Vol. 923). Springer New York LLC. https://doi.org/10.1007/978-3-319-38810-6_37