Document Detail


Respiratory training, hypoxic ventilatory response and acute mountain sickness.
MedLine Citation:
PMID:  8931177     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
G Markov; R Orler; U Boutellier
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Respiration physiology     Volume:  105     ISSN:  0034-5687     ISO Abbreviation:  Respir Physiol     Publication Date:  1996 Sep 
Date Detail:
Created Date:  1997-04-01     Completed Date:  1997-04-01     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0047142     Medline TA:  Respir Physiol     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  179-86     Citation Subset:  IM; S    
Affiliation:
Swiss Federal Institute of Technology, Zürich, Switzerland.
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MeSH Terms
Descriptor/Qualifier:
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

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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