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Sleep and Cerebral Responses to High Altitude (VALLOT 2011)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01565603
Recruitment Status : Unknown
Verified March 2012 by AdministrateurDRC, University Hospital, Grenoble.
Recruitment status was:  Active, not recruiting
First Posted : March 28, 2012
Last Update Posted : March 30, 2012
Information provided by (Responsible Party):
AdministrateurDRC, University Hospital, Grenoble

Brief Summary:
Mechanisms underlying high-altitude intolerance as well as exercise performance limitation in hypoxia still remain to be fully understood. Recent data suggest that sleep disturbances on one hand and cerebral perturbations on teh other hand may be key mechanisms. The investigators evaluated 12 healthy subjects at sea level and at 4400 m of altitude for 7 days in order to better describe sleep and cerebral responses. The investigators hypothesized that sleep and cerebral disturbances play a critical role for the developement of acute mountain sickness and for exercise performance limitation during acute high-altitude exposure.

Condition or disease
Acute Mountain Sickness High Altitude Pulmonary Edema High Altitude Cerebral Edema

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Study Type : Observational
Actual Enrollment : 12 participants
Observational Model: Case-Only
Time Perspective: Cross-Sectional
Official Title: Intolerance Mechanisms and Exercise Performance Limitation During a High Altitude Stay: Investigation of Sleep and Cerebral Responses
Study Start Date : July 2011
Actual Primary Completion Date : October 2011
Estimated Study Completion Date : October 2012

Biospecimen Retention:   Samples Without DNA
Venous blood

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 50 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Healthy young subjects

Inclusion Criteria:

  • 18 to 50 yrs old
  • Male

Exclusion Criteria:

  • Respiratory, cardiac, metabolic or neuromuscular diseases
  • History of severe acute mountain sickness
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Responsible Party: AdministrateurDRC, Principal investigator, University Hospital, Grenoble Identifier: NCT01565603    
Other Study ID Numbers: RCB 2011-A00071-40
First Posted: March 28, 2012    Key Record Dates
Last Update Posted: March 30, 2012
Last Verified: March 2012
Keywords provided by AdministrateurDRC, University Hospital, Grenoble:
Neuromuscular function
Additional relevant MeSH terms:
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Altitude Sickness
Pulmonary Edema
Brain Edema
Respiration Disorders
Respiratory Tract Diseases
Lung Diseases
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases