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Changes in the parameters of respiration, blood pressure, heart rate variability, and cardiac performance during adaptation to the conditions of high-latitude marine expedition (Franz Josef land)статья Тезисы
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или ScopusДата последнего поиска статьи во внешних источниках: 21 мая 2019 г.
- Авторы: Pankova N.B., Karganov M.Yu
- Журнал: International Journal of Psychophysiology
- Том: 131
- Номер: S
- Год издания: 2018
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: S91
- DOI: 10.1016/j.ijpsycho.2018.07.255
- Аннотация: Introduction: Climate of the Far North is considered unfavorable to human health. Our aim was to study the dynamics of the cardiorespiratory system parameters and spectral parameters of the heart rate variability (HRV) and blood pressure variability (BPV) in participants of the high-latitude marine expedition (islands of Franz Josef Land, N81°, E55°). Methods: The results of examinations of 9 crew members (8 men and 1 woman) aged 43±3 years were used in the study. Using the method of simultaneous and continuous recording of respiratory and cardiovascular system indicators, we evaluated their main parameters and parameters of the autonomous regulation systems by HRV and BPV indicators. The measurements were performed at rest and during exercise stress tests. All measurements were performed twice: in the beginning (day 1 after exit from Murmansk port) and at the end (before port call) of the expedition with an interval of 4 weeks. Results: During the expedition, no considerable changes in the main parameters of the respiratory system and HR were revealed. However, a decrease in systolic BP measured by a finger transducer (fBP) and diastolic BP measured on the forearm was observed at rest in all participants. In HRV spectrum, an increase in LF range and LF/HT ratio was found. Similar shifts were also revealed in the respiratory test under conditions of free breathing, but they were also accompanied by a decrease in the pulse fBP and spontaneous arterial baroreflex sensitivity. Under conditions of controlled breathing at a rate of 6 cycles per minute, the above-mentioned BP shifts were accompanied by an increase in VLF power in HRV and fBP spectra. Assessment of the reactivity of the cardiovascular system parameters during exercise tests showed that changes in LF power in HRV spectrum and HF power in the systolic fBP spectrum became less pronounced during free mask-on breathing. Transition to breathing at a rate of 6 cycles per minute was accompanied by an increase in the degree of changes in VLF and HF power associated with a decrease in the relative LF power in the HRV spectrum and a decrease in the degree of changes in the total power of systolic fBP spectrum and HF power in the diastolic fBP spectrum with a decrease in cardiac performance parameters. Conclusion: The obtained results attested to adaptive changes in the parameters of autonomous HR and BP regulation that occurred within 4 weeks of the high-latitude marine expedition.
- Добавил в систему: Панкова Наталия Борисовна