Dynamics of the heart rate variability and oxygen saturation response to acute normobaric hypoxia within the first 10 min of exposure

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15510%2F18%3A73578053" target="_blank" >RIV/61989592:15510/18:73578053 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1111/cpf.12381" target="_blank" >http://dx.doi.org/10.1111/cpf.12381</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/cpf.12381" target="_blank" >10.1111/cpf.12381</a>

Result language

angličtina

Original language name

Dynamics of the heart rate variability and oxygen saturation response to acute normobaric hypoxia within the first 10 min of exposure

Original language description

Although the heart rate variability (HRV) response to hypoxia has been studied, little is known about the dynamics of HRV after hypoxia exposure. The purpose of this study was to assess the HRV and oxygen saturation (SpO2 ) responses to normobaric hypoxia (FiO2 = 9·6%) comparing 1 min segments to baseline (normoxia). Electrocardiogram and SpO2 were recorded during a 10-min hypoxia exposure in 29 healthy male subjects aged 26·0 ± 4·9 years. Baseline HRV values were obtained from a 5-min recording period prior to hypoxia. The hypoxia period was split into 10 non-overlapping 1-min segments and time domain HRV indexes (RMSSD and SDNN) were calculated for each segment. Differences (Δ) from baseline values were calculated and transformed using natural logarithm (Ln). This study revealed that the decrease in ΔSpO2 became significant (P&lt;0·001) in the first minute of hypoxia, the decrease in ΔLn RMSSD became significant (P = 0·002) in the second minute, and the decrease in ΔLn SDNN became significant (P = 0·001) in the third minute. Between the second and fifth minute of hypoxia, ΔSpO2 correlated with ΔLn RMSSD (r = 0·57, P&lt;0·001) and ΔLn SDNN (r = 0·44, P&lt;0·001). Five min after the onset of hypoxia, ΔSpO2 was significantly (P = 0·002) decreased but changes in ΔLn RMSSD (P = 0·344) and ΔLn SDNN (P = 0·558) were not significant. In conclusion, the decrease in HRV was proportional to desaturation but only during the first 5 min of hypoxia

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30306 - Sport and fitness sciences

Project

<a href="/en/project/GA16-13750S" target="_blank" >GA16-13750S: Accumulated effects of fatigue on neuromuscular control of the knee and injury risk in youth athletes during growth and maturation</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

CLINICAL PHYSIOLOGY AND FUNCTIONAL IMAGING

ISSN

1475-0961

e-ISSN

—

Volume of the periodical

38

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

7

Pages from-to

56-62

UT code for WoS article

000417877700009

EID of the result in the Scopus database

2-s2.0-84978997471