Document Detail

Heart rate variability in exposure to high altitude hypoxia of short duration.
MedLine Citation:
PMID:  10602652     Owner:  NLM     Status:  MEDLINE    
The objective of the presented studies is to attempt an evaluation of heart rate (HR) and heart rate variability (HRV) regulatory mechanisms in the presence of autonomous nervous system (ANS) components in transient exposure to high altitude hypoxia. During 24 hrs including a stay in hypobaria, the participants had their HR continuously recorded using the Holter method. The following parameters were calculated at rest and during the stay in a thermobarochamber: spectral power in low frequency bands (LF) 0.04-0. 15 Hz and high frequency bands (HF) 0.15-0.5 Hz, and the sympathetic-parasympathetic balance index LF/HF. Under hypobaric conditions, a decrease in mean spectral power of R-R intervals was noted within both frequency ranges, compared with the study performed in normobaria. The observed differences were larger at daytime.
K Zuzewicz; B Biernat; G Kempa; K Kwarecki
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  International journal of occupational safety and ergonomics : JOSE     Volume:  5     ISSN:  1080-3548     ISO Abbreviation:  Int J Occup Saf Ergon     Publication Date:  1999  
Date Detail:
Created Date:  2000-01-12     Completed Date:  2000-01-12     Revised Date:  2009-11-03    
Medline Journal Info:
Nlm Unique ID:  9507598     Medline TA:  Int J Occup Saf Ergon     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  337-46     Citation Subset:  IM; S    
Central Institute for Labour Protection, Poland.
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MeSH Terms
Anoxia / physiopathology*
Heart Rate / physiology*

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

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