2024 / 01

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DOI: 10.47183/mes.2024.016
Copyright: © 2024 by the authors. Licensee: Pirogov University.
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (CC BY).

ORIGINAL RESEARCH

Impact of persistent cold stress on spectral characteristics of EEG alpha and theta rhythms in military academy cadets

Tolstoguzov SN1, Fisher TA2, Naida YuV1, Lepunova ON1
About authors

1 University of Tyumen, Tyumen, Russia

2 Proshlyakov Tyumen Higher Military Engineer Command School, Ministry of Defence of the Russian Federation, Tyumen, Russia

Correspondence should be addressed: Sergey N. Tolstoguzov
Volodarskogo, 6, Tyumen, 625003, Russia; ur.nmtu@vozugotslot.n.s

About paper

Author contribution: Tolstoguzov SN — research procedure, data analysis, manuscript writing; Fisher TA — data analysis, manuscript writing; Naida YuV — research procedure; Lepunova ON — data analysis.

Compliance with the ethical standards: the study was approved by the Ethics Commitee of the University of Tyumen (protocol № 11 dated 19 February 2024). All patients submitted the informed consent to stady participation.

Received: 2024-02-20 Accepted: 2024-03-21 Published online: 2024-03-31
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Fig. 1. Proportions of various EEG types in the samples of subjects [1]. CG — control group, CETG1 — experimental group 1 undergoing cold exposure training, CETG2 — experimental group 2 undergoing cold exposure training
Fig. 2. Total spectral power (µV2) in the theta range (4–8 Hz) in 16 major leads. The box margins correspond to quartiles Q25% and Q75%. Lines inside the boxes — medians, crosses in the box — average values, upper and lower deviations — maximum and minimum values. * — significance of differences from the control group (р < 0.05) based on the Mann–Whitney U test. CG — control group, CETG1 — experimental group 1 undergoing cold exposure training, CETG2 — experimental group 2 undergoing cold exposure training
Fig. 3. Total spectral power (µV2) in the alpha range (8–14 Hz) in 16 major leads. The box margins correspond to quartiles Q25% and Q75%. Lines inside the boxes — medians, crosses in the box — average values, upper and lower deviations — maximum and minimum values. * — significance of differences from the control group (р < 0.05) based on the Mann–Whitney U test. CG — control group, CETG1 — experimental group 1 undergoing cold exposure training, CETG2 — experimental group 2 undergoing cold exposure training
Table 1. EEG theta and alpha rhythm indices (%) in major leads. Median (quartiles Q25%; Q75%)
Note: * — significance of differences from the control group (р < 0.05) based on the Mann–Whitney U test. CG — control group, CETG1 — experimental group 1 undergoing cold exposure training, CETG2 — experimental group 2 undergoing cold exposure training.
Table 2. Integrated EEG indices (alpha/theta) averaged over all leads. Median (quartiles Q25%; Q75%)
Note: р — significance of differences from the control group based on the Mann–Whitney U test. CG — control group, CETG1 — experimental group 1 undergoing cold exposure training, CETG2 — experimental group 2 undergoing cold exposure training.