Arterial oxygen desaturation response to repeated bouts of sprint exercise in healthy young women

Shimpei Kuniyoshi, Yumiko Endoh, Minoru Kobayashi, Hiroshi Endoh

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

Abstract

The decline in arterial oxygen saturation of hemoglobin during exercise has been termed exercise-induced arterial hypoxemia (EIAH). We examined whether repeated bouts of sprint exercise (SprE) would induce EIAH in healthy young men and women. Ten men and 11 women (20.4 ∼ 0.3 year) performed an anaerobic power test (three bouts of 10 s cycling with 120 s intervals) using a cycle ergometer. Arterial oxygen saturation of hemoglobin measured by pulse oximeter (SpO2), heart rate (HR), rate perceived exertion (RPE), and the blood lactate concentration ([La]b) were assessed at rest, during, and 5 min after repeated bouts of SprE. Women exhibited a lower maximal anaerobic power (MAnP) compared to men (498 ∼ 23 vs. 759 ∼ 22 watts, respectively, p < 0.01). HR, RPE, and [La]b in women were comparable with those in men throughout the test. However, the only significant decline in SpO2 after a single bout of SprE (95.5 ∼ 0.7%) from the resting value (97.9 ∼ 0.2%) was observed in women, and further declines occurred following heavier SprE (< 95%). In 8 of 11 women, mild to moderate EIAH developed, whereas only 2 men showed mild EIAH. Thus, these findings suggest that repeated bouts of SprE might induce mild EIAH in young women but not men.

Original languageEnglish
Title of host publicationOxygen Transport to Tissue XXXI
EditorsEiji Takahashi, Duane Bruley
Pages335-340
Number of pages6
DOIs
Publication statusPublished - 2010
Externally publishedYes

Publication series

NameAdvances in Experimental Medicine and Biology
Volume662
ISSN (Print)0065-2598

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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