Seasonal dynamics of physiological parameters in different social groups of young men in the European North: somparative study

INTRODUCTION. Contrast seasonal changes of the North exogenous natural factors cause significant restructuring in the human body despite the fact that the effect of social factors may greatly modify adaptation processes.

OBJECTIVE. To determine features of seasonal changes in physiological parameters in 2 groups of young men (military personnel and students) in the European North.

МАТЕРИАЛЫ И МЕТОДЫ. The study involved 2 groups of men-northerners, living in Syktyvkar during the survey period (62^о N latitude): conscripts (n = 19) and university students (n = 16). The study was conducted for over a year: in January, April, July and October: anthropometric measures, arterial pressure and heart rate variability (RV) were recorded.

RESULTS. All the examined experienced an increase in body weight and body mass index in the cold season, more pronounced in October. An increase in diastolic pressure was also noted in autumn. Heart rate variability in the examined had different seasonal dynamics.

DISCUSSION. The study found that if regarding mass index, fat mass and body mass index, the examined young men had similar dynamics, however, arterial pressure and heart rate variability differ between groups both at a basic level and in seasonal dynamics.

CONCLUSION. In the European North young men experience seasonal rate changes, which dynamics have been different in the studied groups. Long daily exposure to the open air cause mor pronounced signs of vagotonia in conscripts.

marine medicine, seasons, European North, cardiovascular system, autonomic balance

1. Бойко Е. Р., Канева А. М. Индексы липидного обмена в ранней диагностике сердечно-сосудистой патологии у человека на Севере // Якутский медицинский журнал. 2019. Т. 67, № 3. С. 96–101 [Boyko E. R., Kaneva A. M. Indices of lipid metabolism for the early diagnosis of cardiovascular disease in residents of the north. Yakut medical journal, 2019, Vol. 67, № 3, pp. 96–101 (In Russ.)]. doi:10.25789/YMJ.2019.67.27

2. Марасанов А. В., Стехин А. А., Яковлева Г. В. Подход к обеспечению здоровьесбережения населения Арктической зоны Российской Федерации (обзор) // Журн. мед.-биол. исследований. 2021. Т. 9, № 2. С. 201–212 [Marasanov A. V., Stekhin A. A., Yakovleva G. V. An Approach to Public Health Protection in the Arctic Zone of the Russian Federation (Review). Journal of Medical and Biological Research, 2021, Vol. 9, №. 2, pp. 201–212 (In Russ.)]. doi: 10.37482/2687-1491-Z058

3. Sega R., Cesana G., Bombelli M., Grassi G., Stella M. L., Zanchetti A., Mancia G. Seasonal variations in home and ambulatory blood pressure in the PAMELA population. J. Hypertens, 1998, Vol. 16, №11, pp.1585–1592. doi: 10.1097/00004872-199816110-00004

4. Liao J. N., Chao T. F., Liu C. J., Chen S. J., Hung C. L., Lin Y. J., Chang S. L., Lo L. W., Hu Y. F., Tuan T. C., Chung F. P., Chen T. J., Lip G. Y. H., Chen S. A. Seasonal variation in the risk of ischemic stroke in patients with atrial fibrillation: A nationwide cohort study. Heart rhythm, 2018, Vol. 15, № 11, pp. 1611–1616. doi:10.1016/j.hrthm.2018.06.043

5. Хаснулин В. И., Хаснулин П. В. Современные представления о механизмах формирования северного стресса у человека в высоких широтах // Экология человека. 2012. № 1. С. 3–11 [Hasnulin V. I., Hasnulin P. V. Modern concepts of the mechanisms forming northern stress in humans in high latitudes. Human Ecology, 2012, № 1, pp. 3–11 (In Russ.)].

6. Гурьева А. Б., Алексеева В. А., Николаев В. Г. Антропометрические и биоимпедансометрические параметры студентов Якутии в контексте гендерных различий // Вестник новых медицинских технологий. 2019. № 1. С. 139–144 [Guryeva A. B., Alekseeva V. A., Nikolaev V. G. Anthropometric and bioimpendance parameters of the students of Yakutia in the context of gender differences. Journal of new medical technologies, 2019, №1, pp. 139–144 (In Russ.)]. doi: 10.24411/2075-4094-2019-1628

7. Westerterp K. R. Seasonal variation in body mass, body composition and activity-induced energy expenditure: a long-term study. Eur J Clin Nutr., 2020, Vol, 74, pp. 135–140. doi: 10.1038/s41430-019-0408-y

8. Кузьменко Н. В., Цырлин В. А., Плисс М. Г., Галагудза М. М. Сезонная динамика массы тела у здоровых людей: мета-анализ // Физиология человека. 2021. Т. 47, № 6. С. 100–114 [Kuzmenko N. V., Tsyrlin V. A., Pliss M. G., Galagudza M. M. Seasonal body weight dynamics in healthy people: a meta-analysis. Human physiology, 2021, Vol. 47, № 6. pp. 100–114 (In Russ.)]. doi: 10.1134/S0362119721060062

9. Tanaka N., Okuda T., Shinohara H., Yamasaki R. S., Hirano N., Kang J., Ogawa M., Nishi N. N. Relationship between Seasonal Changes in Food Intake and Energy Metabolism, Physical Activity, and Body Composition in Young Japanese Women. Nutrients. 2022, № 14(3), 506. doi: 10.3390/nu14030506

10. Соколов А. Я., Суханова И. В. Соматофизиологические показатели у студентов Северного международного университета // Экология человека. 2006. № 1. С. 24–27 [Sokolov A. Ya., Sukhanova I. V. Somatophysiological indices in students of Northern International University. Human Ecology, 2006, № 1, pp. 24–27 (In Russ.)].

11. Тятенкова Н. Н., Аминова О. С. Оценка функциональных возможностей кардиореспираторной системы у молодежи // Здоровье населения и среда обитания. 2021. Т. 29, № 7. С. 50–56 [Tyatenkova N. N., Aminova O. S. Assessment of functional capacities of the cardiorespiratory system in young adults. Public health and habitat, 2021, Vol. 29, №7, pp. 50–56 (In Russ.)]. doi: 10.35627/2219-5238/2021-29-7-50-56

12. Максимов А. Л., Лоскутова А. Н. Особенности структуры вариабельности кардиоритма уроженцев Магаданской области в зависимости от типа вегетативной регуляции // Экология человека. 2013. № 6. С. 3–10 [Maximov A. L., Loskutova A. N. Heart rate variability structure features in persons born in Magadan region depending on vegetative regulation type. Human Ecology, 2013, № 6, pp. 3–10 (In Russ.)].