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Ulyanovsk Medico-biological Journal
Article . 2019 . Peer-reviewed
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SEASONAL CHARACTERISTICS OF EXTERNAL RESPIRATION PATTERN IN STUDENTS WITH DIFFERENT CHRONOTYPES

СЕЗОННЫЕ ОСОБЕННОСТИ ПАТТЕРНА ВНЕШНЕГО ДЫХА-НИЯ У СТУДЕНТОВ С РАЗНЫМИ ХРОНОТИПАМИ
Authors: S.I. Pavlenko; O.A. Vedyasova;

SEASONAL CHARACTERISTICS OF EXTERNAL RESPIRATION PATTERN IN STUDENTS WITH DIFFERENT CHRONOTYPES

Abstract

The objective of the paper is to analyze the external respiration pattern in students with morning, afternoon and evening types of activity at rest and after monotonous mental work load during the day in the spring-summer and autumn-winter seasons. Materials and Methods. The authors examined three chronotypes: eveningness with a delayed sleep period (owls), morningness with an advanced sleep period (larks) and indifferent or asynchronous chronotype (pigeons). The individual chronotype was determined using Horne and Ostberg morningness-eveningness questionnaire in Putilov’s modification and Moskovchenko questionnaire. In the morning, afternoon and evening spirography was used to record external respiration in the normal condition and after monotonous mental load. Changes in the volume and time spirogram parameters were analyzed. Results. It was found out that “pigeons” and “larks” demonstrated more evident seasonal and daily external respiration dynamics if compared to “owls”. In “pigeons”, the initial values of the breathing pattern parameters and their changes during monotonous mental stress in the daytime and evening hours in the autumn-winter period were higher than in the spring-summer period. In “larks”, similar seasonal differences in the respiration pattern were also observed at rest and under load, but only in the morning and in the evening. In “owls,” the reaction of external respiration seasonal dependence to work was more evident in the evening in the autumn-winter period. Conclusion. The data obtained reflect the chronotypic dependence of seasonal and circadian changes in external respiration. Based on the results of the study, we can talk about various influence of respiratory reactions on the mechanisms of labor adaptation in people with morning, afternoon and evening types of activity in different seasons. Keywords: breathing pattern, seasonal changes, chronotypes, monotonous load, students. Цель. Анализ паттерна внешнего дыхания у студентов с утренним, дневным и вечерним типами активности в условиях покоя и после монотонной умственной нагрузки в разное время дня весенне-летнего и осенне-зимнего периодов года. Материалы и методы. Объектом исследования являлись студенты – «жаворонки», «голуби» и «совы». Индивидуальный хронотип испытуемых определяли с помощью теста Хорна–Остберга в модификации Путилова, а также анкетирования по Московченко. Внешнее дыхание регистрировали методом спирографии утром, днем и вечером в исходном состоянии и после выполнения монотонной умственной нагрузки. Анализировали изменения объемных и временных показателей спирограммы. Результаты. Выявлено, что «голубям» и «жаворонкам» свойственна более выраженная по сравнению с «совами» сезонная и дневная динамика внешнего дыхания. У «голубей» исходные значения параметров паттерна дыхания и их изменения при монотонной умственной нагрузке в дневные и вечерние часы в осенне-зимнем периоде были больше, чем в весенне-летнем. У «жаворонков» подобные сезонные различия паттерна дыхания также отмечались в покое и при нагрузке, но в утреннее и вечернее время суток. У «сов» сезонная зависимость внешнего дыхания проявлялась в виде доминирования его реакций на работу в вечернее время дня осенне-зимнего периода года. Заключение. Полученные данные отражают хронотипическую зависимость сезонных и циркадианных изменений внешнего дыхания. На основании результатов исследования можно говорить о разном вкладе дыхательных реакций в механизмы трудовой адаптации у лиц с утренним, дневным и вечерним типами активности в различные сезоны года. Ключевые слова: паттерн дыхания, сезонные изменения, хронотипы, монотонная нагрузка, студенты.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
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