Cardiovascular system parameters in participants of Arctic expeditions

Pankova, N.B.; Alchinova, I.B.; Cherepov, A.B.; Yakovenko, E.N.; Karganov, M.Y.

Авторы: Pankova N.B., Alchinova I.B., Cherepov A.B., Yakovenko E.N., Karganov M.Yu
Журнал: International Journal of Occupational Medicine and Environmental Health
Том: 33
Номер: 6
Год издания: 2020
Издательство: Instytut Medycyny Pracy im. Jerzego Nofera/Nofer Institute of Occupational Medicine
Местоположение издательства: Poland
Первая страница: 819
Последняя страница: 828
DOI: 10.13075/ijomeh.1896.01628
Аннотация: Objectives: A method of continuous heart rate (HR) and blood pressure (BP) recording was used for the evaluation of the cardiovascular systemparameters in participants of short-term (<1 month) high-latitude expeditions, in comparison with the parameters of residents of Central Russia and the Arctic region. Material and Methods: A dynamic examination of participants of Arctic expeditions (30 men, residents of middle-latitude regions, aged 46.7±1.7 years), workers permanently living in Central Russia (the Moscow region, 44 men, aged 46.7±1.0 years) and residents of the North (the Murmansk region, 35 men, aged 46.6±1.3 years) was performed. The authors used a spiroartheriocardiorythmograph allowing the parallel recording of HR, BP, spectral characteristics of HR variability (HRV) and the variability of systolic BP (sBP) and diastolic BP (dBP), cardiac performanceparameters, and spontaneous baroreflex sensitivity (BRS). The parameters were recorded at rest, in a sitting position, over 2 min. Results: The basicclinical parameters (HR, BP and cardiac performance) did not differ in the workers living in different climatic zones. However, the residents of the North demonstrated a lower total power (TP) of the dBP variability spectrum and a lower relative power of the high-frequency (HF) range in both the sBP and dBP variability spectra. The participants of expeditions to the North had a lower TP of the HRV spectrum (in comparison with both control groups) that did not change during the expeditions; BRS was reduced, while the TP of the sBP spectrum was increased in comparison withthe corresponding parameters obtained from the residents of circumpolar regions, and decreased during the expedition in parallel with a decreasein the sBP values. The TP of both the sBP and dBP variability spectra, as well as the power of the HF range in these spectra, were similar in the participants of expeditions to those obtained from the residents of Central Russia, and they considerably surpassed the corresponding parameters in the northerners surveyed. Conclusions: The revealed peculiarities of the cardiovascular system in the participants of high-latitude expeditions can beconsidered as correlates of positive, and adequate in terms of the physiological value, adaptive shifts in the autonomous regulation of the cardiovascular system.
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Cardiovascular system parameters in participants of Arctic expeditionsстатья Исследовательская статья

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