Sex-related difference in muscle deoxygenation responses between aerobic capacity-matched elderly men and women

Shun Takagi*, Ryotaro Kime, Masatsugu Niwayama, Takuya Osada, Norio Murase, Shizuo Sakamoto, Toshihito Katsumura

*Corresponding author for this work

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

2 Citations (Scopus)

Abstract

Muscle O2 dynamics during ramp cycling exercise were compared between aerobic capacity-matched elderly men (n=8, age 65±2 years) and women (n=8, age 66±3 years). Muscle O2 saturation (SmO2) and relative change in deoxygenated (Δdeoxy-Hb) and total hemoglobin concentration (Δtotal-Hb) were monitored continuously during exercise in the vastus lateralis (VL) and gastrocnemius medialis (GM) by near infrared spatial resolved spectroscopy. SmO2 was significantly higher during exercise in women than in men in VL, but not in GM. In VL, Δdeoxy-Hb and Δtotal-Hb were significantly higher in men than in women, especially during high intensity exercise. However, no significant difference was observed in Δdeoxy-Hb or Δtotal-Hb in GM. Sex-related differences in muscle deoxygenation response may be heterogeneous among leg muscles in elderly subjects.

Original languageEnglish
Title of host publicationOxygen Transport to Tissue XXXVII
EditorsClare E. Elwell, Terence S. Leung, David K. Harrison
PublisherSpringer New York LLC
Pages55-61
Number of pages7
ISBN (Print)9781493930227
DOIs
Publication statusPublished - 2016
Event42nd Annual Meeting of International Society on Oxygen Transport to Tissue - London, United Kingdom
Duration: 2014 Jun 282014 Jul 3

Publication series

NameAdvances in Experimental Medicine and Biology
Volume876
ISSN (Print)0065-2598
ISSN (Electronic)2214-8019

Other

Other42nd Annual Meeting of International Society on Oxygen Transport to Tissue
Country/TerritoryUnited Kingdom
CityLondon
Period14/6/2814/7/3

Keywords

  • Aging
  • Cycling exercise
  • Muscle oxygen dynamics
  • Near infrared spectroscopy
  • Regional difference

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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