Heart Rate Variability in Exposure to High Altitude Hypoxia of Short Duration

• Autorzy: Zużewicz K. , Biernat B. , Kempa G. , Kwarecki K.
• Języki publikacji: EN

Abstrakty

EN

The objective of the study 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.

Słowa kluczowe

EN

heart rate variability; hypoxic hypoxia; autonomic nervous system

PL

zmienność rytmu serca; układ nerwowy; niedotlenienie

• Wydawca: Taylor & Francis
• Czasopismo: International Journal of Occupational Safety and Ergonomics
• Rocznik: 1999
• Tom: Vol. 5, No. 3
• Strony: 337--346
• Opis fizyczny: Bibliogr. 11 poz., rys., tab., wykr.

Twórcy

autor

Zużewicz K.

• Central Institute for Labour Protection, Poland

autor

Biernat B.

• Air Force Institute of Aviation Medicine, Poland

autor

Kempa G.

• Air Force Institute of Aviation Medicine, Poland

autor

Kwarecki K.

• Central Institute for Labour Protection, Poland

Bibliografia

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