UDC

612.172.2:612.178

Authors

Denis M. Fedotov*, Lyubov’ A. Mel’kova*, Artem N. Podoplekin*
*Northern (Arctic) Federal University named after M.V. Lomonosov (Arkhangelsk, Russian Federation)

Abstract

This paper studied the body’s functional state in the members of the research expedition “Arctic Floating University – 2015” in the White and Barents Sea basins. A group of 44 people aged between 20 and 66 years took part in this study. The sample was divided into 2 groups by their age: up to 35 years (26 subjects) and older than 35 years (18 subjects). The functional state of the body was evaluated during the first 5 days (Phase 1) and from the 16th to the 19th day (Phase 2) of the voyage using the following computer appliances: Simona 111 Integrated Monitoring System and VNS-Spektr. The age group up to 35 years showed by the end of the voyage a statistically significant reduction in median values of systolic blood pressure by 1.5 % (p = 0.038) and of mean arterial blood pressure by 0.6 % (p = 0.049). In the group of subjects older than 35 years, cardiovascular system parameters did not change significantly during the voyage, which can be explained by a lower degree of reactivity of the cardiovascular system. The dynamics of the changes in integral indicators suggests multidirectional changes in the current functional state of the expedition members, which, however, stays within the limits of their age norms. A comparative evaluation of heart rate variability parameters shows an increasing activity of parasympathetic effects by the end of the voyage in subjects up to 35 years old and a growing activity of the sympathoadrenal system with an impact on the humoral component of regulation in subjects older than 35 years. An analysis of the data on the state of the autonomic nervous system allows us to interpret these changes as an adequate response of the cardiovascular system of the expedition members to a number of factors of the environment on board. The results showed no significant negative impacts of a short-term sea voyage in high latitudes on the functional state of the body of expedition members. However, further research into human adaptation during translatitude sea voyages is required in order to develop practical recommendations for health maintenance in people undertaking seа voyages to high latitudes.

Keywords

human adaptation to Arctic conditions, translatitude sea voyage, cardiovascular system parameters, heart rate variability

References

1. Lupachev V.V., Kubasov R.V., Bogdanov R.B. Vliyanie klimatogeograficheskikh usloviy na sostoyaniе zdorov’ya moryakov (na osnove analiza publikatsiy) [Effect of Climatic and Geographical Conditions on the Health of Seamen (Based on the Analysis of Publications)]. Vestnik gosudarstvennogo universiteta morskogo i rechnogo flota im. admirala S.O. Makarova, 2015, no. 3, pp. 30–35.
2. Mosyagin I.G., Khugaeva S.G., Boyko I.M. Psikhofiziologicheskie strategii adaptivnogo professiogeneza moryakov tralovogo flota v usloviyakh Arkticheskogo Severa [Psychophysiological Strategy of Adaptive Genesis of Trawler Fleet Sailors in the Arctic North]. Arkhangelsk, 2013. 196 p.
   
3. Alekseenko V.D., Simonova N.N., Zueva T.N. Vliyanie proizvodstvennykh faktorov na sostoyanie zdorov’ya rabotnikov neftedobychi pri vakhtovoy organizatsii truda v Zapolyar’e [Influence of Industrial Factors on Health Status of Oil Production Workers During Rotations in Polar Region]. Ekologiya cheloveka, 2009, no. 6, pp. 47–50.
   
4. Agadzhanyan N.A. Adaptatsiya cheloveka k srede obitaniya i trudovoy deyatel’nosti [Human Adaptation to the Living and Working Environment]. Byulleten’ AMN SSSR, 1982, no. 6, pp. 92–97.
   
5. Khasnulin V.I., Khasnulin P.V. Sovremennye predstavleniya o mekhanizmakh formirovaniya severnogo stressa u cheloveka v vysokikh shirotakh [Modern Concepts of the Mechanisms Forming Northern Stress in Humans in High Latitudes]. Ekologiya cheloveka, 2012, no. 1, pp. 3–11.
   
6. Gudkov A.B., Shcherbina F.A., Myznikov I.L. Adaptivnye reaktsii organizma moryakov rybopromyslovogo flota [The Body’s Adaptive Response in Fishing Fleet Sailors]. Arkhangelsk, 2011. 239 p.
   
7. Konovalov Yu.V. Usloviya truda i sostoyanie zdorov’ya moryakov (na primere sudov OAO “Dal’nevostochnoe morskoe parokhodstvo”: avtoref. dis. ... kand. tekhn. nauk [Working Conditions and Health of Sailors (Exemplified by the Ship Crews of Far-Eastern Shipping Company): Cand. Tech. Sci. Diss. Abs.]. Vladivostok, 2000. 32 p.
   
8. Zaytsev V.I., Vinogradov S.A. Osobennosti formirovaniya adaptatsionnykh reaktsiy organizma moryakov v usloviyakh vysokikh shirot [Features of Formation of Adaptive Reactions in Sailors at High Latitudes]. Zdorov’e naseleniya i sreda obitaniya, 2013, no. 2, pp. 11–13.
   
9. Lomov O.P., Akhmetzyanov I.M., Sokolov M.O., Levashov S.P., Plakhov N.N. Fizicheskie faktory obitaemosti korabley i sudov [Physical Factors of Habitability of Ships and Other Vessels]. St. Petersburg, 2014. 560 p.
   
10. Yur’ev Yu.Yu. Kardiorespiratornaya sistema i psikhoemotsional’nyy status u rybakov v dinamike arkticheskogo reysa: avtoref. dis. ... kand. med. nauk [Cardiorespiratory System and the Psycho-Emotional Status of Sailors the Dynamics of an Arctic Voyage: Cand. Med. Sci. Diss. Abs.]. Arkhangelsk, 2005. 18 p.
    
11. Shcherbina Yu.F. Adaptivnye reaktsii organizma moryakov rybopromyslovogo flota v dinamike 75-sutochnogo reysa [Adaptive Response in Fishing Fleet Seamen During a 75-Day’s Voyage]. Vestnik Severnogo (Arkticheskogo) federal’nogo universiteta. Ser.: Mediko-biologicheskie nauki, 2014, no. 3, pp. 91–99.
    
12. Sarychev A.S. Kharakteristika adaptivnykh reaktsiy organizma vakhtovykh rabochikh v usloviyakh Zapolyar’ya: dis. ... d-ra med. nauk [Description of Adaptive Response in Rotational Workers in the Arctic: Dr. Med. Sci. Diss.]. Arkhangelsk, 2012. 301 p.
    
13. Ermolin S.P. Fiziologicheskie reaktsii organizma voennosluzhashchikh v usloviyakh Arkticheskoy zony Rossiyskoy Federatsii: avtoref. dis. ... kand. med. nauk [Physiological Response in Military Men Serving in the Russian Arctic: Cand. Med. Sci. Diss. Abs.]. Arkhangelsk, 2015. 18 p.
    
14. Krivoshchekov S.G., Leutin V.P., Divert V.E., Divert G.M., Platonov Ya.G., Kovtun L.T., Komlyagina T.G., Mozolevskaya N.V. Sistemnye mekhanizmy adaptatsii i kompensatsii [System Mechanisms of Adaptation and Compensation]. Byulleten’ Sibirskogo otdeleniya RAMN, 2004, no. 2, pp. 148–153.
    
15. Psyadlo E.M. Vzaimosvyaz’ funktsional’nogo sostoyaniya serdechno-sosudistoy sistemy i psikhofiziologicheskogo statusa moryakov [The Relationship Between the Functional State of the Cardiovascular System and the Psychophysiological Status of Seamen]. Aktual’nye problemy transportnoy meditsiny, 2014, no. 1, pp. 61–68.
    
16. Pushkina V.N., Gribanov A.V. sezonnye izmeneniya vzaimootnosheniy pokazateley kardiorespiratornoy sistemy u yunoshey v usloviyakh tsirkumpolyarnogo regiona [Seasonal Changes of Interrelations Between Cardiorespiratory System Characteristics of Youths in Conditions of Circumpolar Region]. ekologiya cheloveka, 2012, no. 9, pp. 23–31.
    
17. Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology. Heart Rate Variability. Standards of Measurement. Physiological Interpretation and Clinical Use. Circulation, 1996, vol. 93, pp. 1043–1065.
    
18. Baevskiy R.M., Ivanov G.G. Variabel’nost’ serdechnogo ritma: teoreticheskie osnovy i vozmozhnosti klinicheskogo primeneniya [Heart Rate Variability: Theoretical Basis and Clinical Applications]. Ul’trazvukovaya diagnostika i funktsional’naya diagnostika, 2001, no. 3, pp. 108–127.
    
19. Zenchenko T.A., Skavulyak A.N., Khorseva N.I., Breus T.K. Kharakteristika individual’nykh reaktsiy serdechnososudistoy sistemy zdorovykh lyudey na izmeneniya meteorologicheskikh faktorov v shirokom diapazone temperatur [Characteristics of Individual Reactions of the Cardiovascular System of Healthy People to Changes in Meteorological Factors in a Wide Temperature Range]. Geofizicheskie protsessy i biosfera, 2013, no. 1, pp. 22–43.
    
20. Markov A.L., Zenchenko T.A., Solonin Yu.G., Boyko E.R. Chuvstvitel’nost’ k atmosfernym i geomagnitnym faktoram funktsional’nykh pokazateley organizma zdorovykh muzhchin – zhiteley Severa Rossii [Sensitivity of the Body’s Functional Parameters to Atmospheric and Geomagnetic Factors in Healthy Male Dwellers of the Russian North]. Aviakosmicheskaya i ekologicheskaya meditsina, 2013, vol. 47, no. 2, pp. 29–32.
    
21. Mikhaylov V.M. Variabel’nost’ ritma serdtsa. Opyt prakticheskogo primeneniya [Heart Rate Variability: The Experience of Practical Application]. Ivanovo, 2000. 200 p.