| Acute hypoxic ventilatory response and exercise-induced arterial hypoxemia in men and women. | |
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MedLine Citation:
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PMID: 15477171 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Recent studies claim a higher prevalence of exercise-induced arterial hypoxemia (EIAH) in women relative to men and that diminished peripheral chemosensitivity is related to the degree of arterial desaturation during exercise in male endurance athletes. The purpose of this study was to determine the relationship between the acute ventilatory response to hypoxia (AHVR) and EIAH and the potential influence of gender in trained endurance cyclists and untrained individuals. Healthy untrained males (n = 9) and females (n = 9) and trained male (n = 11) and female (n = 10) cyclists performed an isocapnic AHVR test followed by an incremental cycle test to exhaustion. Oxyhemoglobin saturation (Sa(O(2)) was lower in trained men (91.4 +/- 0.9%) and women (91.3 +/- 0.9%) compared to their untrained counterparts (94.4 +/- 0.8% versus 94.3 +/- 0.7%) (P < 0.05). AHVR and maximal O(2) consumption were related for all subjects (r = -0.46), men (r = -0.45) and women (r = -0.53) (P < 0.05) but AHVR was unrelated to Sa(O(2)) for any groups (P > 0.05). We conclude that resting AHVR does not have a significant role in maintaining Sa(O(2)) during sea-level maximal cycle exercise in men or women. |
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Authors:
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Jordan A Guenette; Tu T Diep; Michael S Koehle; Glen E Foster; Jennifer C Richards; A William Sheel |
Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Respiratory physiology & neurobiology Volume: 143 ISSN: 1569-9048 ISO Abbreviation: Respir Physiol Neurobiol Publication Date: 2004 Oct |
Date Detail:
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Created Date: 2004-10-12 Completed Date: 2004-12-22 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 101140022 Medline TA: Respir Physiol Neurobiol Country: Netherlands |
Other Details:
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Languages: eng Pagination: 37-48 Citation Subset: IM |
Affiliation:
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Health and Integrative Physiology Laboratory, School of Human Kinetics, The University of British Columbia, Vancouver, BC, Canada V6T 1Z1. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Anoxia / physiopathology* Exercise / physiology* Exercise Test Female Humans Male Oxygen / blood Oxygen Consumption / physiology Physical Fitness / physiology* Respiratory Function Tests Respiratory Physiological Phenomena* Sex Factors |
| Chemical | |
Reg. No./Substance:
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7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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