| Respiratory training, hypoxic ventilatory response and acute mountain sickness. | |
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MedLine Citation:
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PMID: 8931177 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A low hypoxic ventilatory response (HVR) has been observed in endurance athletes and has also been associated with low exercise ventilation and a high susceptibility to acute mountain sickness (AMS). In other studies, respiratory training was found to improve cycling endurance and decrease exercise ventilation. We therefore hypothesized that respiratory training alone may reduce HVR and increase AMS susceptibility. In 16 healthy subjects, we measured HVR (delta VE vs. delta SaO2) and the susceptibility to AMS (Lake Louise Score). Eight subjects then underwent respiratory training (30 min isocapnic hyperpnea, 4-5 times weekly, 4-5 weeks), thereby increasing breathing endurance (the time to exhaustion while breathing at 60-75% of MVV) from 455 +/- 193 sec to 2049 +/- 476 sec (p < 0.05). Eight subjects served as controls. No significant change of HVR (0.67 +/- 0.36 vs. 0.55 +/- 0.22) or of AMS score (3.5 +/- 2.1 vs. 3.9 +/- 2.2) was observed after training, and there was no significant difference from controls. We conclude that respiratory training neither depresses HVR nor increases the risk of AMS. |
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Authors:
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G Markov; R Orler; U Boutellier |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Respiration physiology Volume: 105 ISSN: 0034-5687 ISO Abbreviation: Respir Physiol Publication Date: 1996 Sep |
Date Detail:
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Created Date: 1997-04-01 Completed Date: 1997-04-01 Revised Date: 2009-11-11 |
Medline Journal Info:
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Nlm Unique ID: 0047142 Medline TA: Respir Physiol Country: NETHERLANDS |
Other Details:
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Languages: eng Pagination: 179-86 Citation Subset: IM; S |
Affiliation:
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Swiss Federal Institute of Technology, Zürich, Switzerland. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Altitude Sickness / etiology, physiopathology* Anoxia / physiopathology*, prevention & control Case-Control Studies Exercise Test Female Humans Male Physical Education and Training Physical Endurance / physiology Respiratory Mechanics / physiology Respiratory Muscles / physiology* Spirometry |
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