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Gazzetta Medica Italiana Archivio per le Scienze Mediche 2018 March;177(3 Suppl 1):1-8

DOI: 10.23736/S0393-3660.17.03722-6

Copyright © 2017 EDIZIONI MINERVA MEDICA

language: English

Heart rate variability and photoplethysmogram indicators in assessment of adaptation levels in students experiencing examination loads

Sergey ASTAKHOV 1, Anna NENASHEVA 1 , Alexey ASTAKHOV 2, Andrey RAGOZIN 1

1 Institute of Sports, Tourism and Service, South Ural State University, Chelyabinsk, Russia; 2 South Ural State Medical University, Chelyabinsk, Russia


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BACKGROUND: Every year thousands of Russian students challenge the problems associated with examination loads, which is known to be one of the most common causes of mental stress in high school students. Modern clinical medicine and applied physiology deal with various functional states of the body developed under the influence of different stress factors. Studying the myocardial activity and volumetric characteristics of pulse wave will reveal the level of disturbances. The objective of the research is to study the indicators of myocardial rate variability and volumetric characteristics of pulse wave in assessment of adaptation levels in students experiencing examination loads.
METHODS: The techniques of photoplethysmography (PPG) and cardiorhythmography were used. The research involved 35 apparently healthy students at the first stage (intersession period) and 21 healthy students at the second stage (examination session period). Plethysmogram was recorded during 500 cardiac cycles, even breathing, no sighs. The studies were conducted at the regular academic day and during the examination session period. Study methods included active orthostatic testing in the intersession period (1st stage of the research) and in the examination session period, 30 minutes before the examination (2nd stage of the research). During the examination period the students were subjected to active orthostatic test 30 minutes before the examination started.
RESULTS: The significant differences obtained within the research indicated the disturbed microcirculation and baroregulation associated with the effects of examination loads.
CONCLUSIONS: Examination loads are able to provide a complex influence on the students’ psychophysiological state during the examination session and on the examination day in particular.


KEY WORDS: Photoplethysmography - Microcirculation - Psychological stress - Posture - Fourier analysis

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