Changes in cardiovascular indices and bioelectric activity of the brain in response to cold exposure in young men

Кривоногова, Е В; Вячеславовна, Кривоногова Елена; Демин, Д. Б.; Борисович, Демин Денис; Krivonogova, Olga; Вячеславовна, Кривоногова Ольга; Поскотинова, Л. В.; Владимировна, Поскотинова Лилия

doi:10.33396/1728-0869-2020-11-20-26

Cited by 3 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…People with low HRV have a slow recovery of autonomous regulation of heart rate after cold exposure as the main environmental stress factor in the Arctic [33], as well as after psychological stress [34]. We also showed that the greatest severity of symptoms of withdrawal from access to the Internet was revealed in adolescents living in the northern region of Russia, in contrast to adolescents who are residents of the southern region of Russia [14].…”

Section: Discussionmentioning

confidence: 60%

Heart Rate Variability, Time Estimation and Internet-Dependent Behaviour in 16–17-Year-Old Adolescents: A Study in Russian Arctic

Krivonogova

Кривоногова

Поскотинова

2021

Life

View full text Add to dashboard Cite

Internet-dependent behaviour in adolescents can contribute to a change in the function of the nervous system, which is reflected in the violation of time perception and autonomic regulation of the heart rate. The aim of the study was to determine groups of individuals with different risks of Internet addiction (IA) in relation to heart rate variability (HRV) parameters and the efficiency of time estimation in adolescents aged 16–17 years living in the Russian Arctic. Adolescents aged 16–17 years (n = 49–32 females, 17 males) living in Yamalo-Nenets Autonomous Okrug (Russia) were observed. Chen Scale Internet Addiction (CIAS) was used. The duration of an individual 1 min was determined. HRV parameters were determined using the "Varicard" equipment (Russia). In 16–17-year-old adolescents with different levels of risk of developing IA, including signs of IA, we revealed a high severity of symptoms of withdrawal from Internet use, difficulty in time estimation against the background of sympathicotonia and a decrease in vagal regulation of heart rate. In individuals with minimal symptoms of withdrawal from Internet use, the total HRV and vagal activity remain higher than in those with severe withdrawal symptoms, and their time estimation remains effective.

show abstract

Section: Discussionmentioning

confidence: 60%

Heart Rate Variability, Time Estimation and Internet-Dependent Behaviour in 16–17-Year-Old Adolescents: A Study in Russian Arctic

Krivonogova

Кривоногова

Поскотинова

2021

Life

View full text Add to dashboard Cite

show abstract

“…Commonly known mechanisms of weather factors affecting patients with cardiovascular diseases include changes in blood rheological parameters (such as increased thrombosis tendency), blood pressure levels, heart rate variability, and lipid peroxidation processes in the body (for example, with increased levels of ozone in inhaled air) [32,[40][41][42]. Additionally, weather factors can create barriers to implementing necessary lifestyle modifications [7,26,43].…”

Section: Discussionmentioning

confidence: 99%

Meteorological Parameters and Hypertensive Crisis Risk: a Longitudinal Study for Prediction Model Developing

Fesyun,

Yurova,

Grishechkina

et al. 2024

Bulletin of Rehabilitation Medicine

View full text Add to dashboard Cite

INTRODUCTION. Integrating climatotherapy into health resort therapy for arterial hypertension in diverse landscapes has the potential to yield positive effects, if used in target groups and preventing the occurrence of meteopathic reactions, including a hypertensive crisis (HC). While the impact of natural healing factors on the human body has been previously studied, the utilization of modern mathematical approaches in developing HC models has enabled accurate predictions and timely prevention of HC during adverse weather periods. AIM. To analyze publicly available meteorological data time series to construct a mathematical model for predicting high-risk situations of HC based on the influence of climatic factors on patients with arterial hypertension. This model would identify unfavorable periods for hypertensive patients staying in health resorts throughout the year, allowing for timely therapeutic and preventive measures to prevent HC during these periods. MATERIALS AND METHODS. The study was conducted over a 22-month period, from January 1, 2019 to October 31, 2020, in Gelendzhik and Novorossiysk, renowned resort destinations located on the Black Sea coast of the Caucasus. These regions have a dry and subtropical climate. Meteorological data were obtained from Gelendzhik and Novorossiysk weather stations, and ambulance calls data were collected from Gelendzhik (12,268 calls) and Novorossiysk (12,226 calls), resulting in a total of 24,494 ambulance calls. The model was calculated using the maximum likelihood method through nonlinear logit regression. Key factors for the model included the main indicators of climate1 and geomagnetic conditions2. The logistic regression method exhibited a sensitivity of 56.0 % and a specificity of 77.3 %, with an overall accuracy of 76.0 %. RESULTS. According to the developed predictive model, the winter season has no more than 75.0 % of days associated with a low risk of hypertension, decreasing to 59.0 % in spring. However, the proportion increases to 89.0 % in summer and reaches 77.0 % in autumn. Model adequacy checks indicated a high degree of relevance, with Q (model quality) ranging between +0.64 and –0.117, and p 0.3. CONCLUSION. The developed logistic regression models provide more accurate calculations of individual risks for developing complications of hypertension and offer the opportunity to formulate individual strategies for patients. These models contribute to the field of climatotherapy and enhance the understanding of the impact of climatic factors on hypertensive patients, facilitating targeted interventions and improved management of hypertensive crises.

show abstract

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

Tolstoguzov,

Fisher,

Naida

et al. 2024

MES

View full text Add to dashboard Cite

The study was focused on the features of spectral characteristics of the EEG alpha and theta ranges in the military academy cadets undergoing specific training to improve cold resistance (cold exposure training). The study was aimed to assess the impact of the military academy cadets’ incremental exposure to the graduated cold stress (cold exposure training) on spectral characteristics of the EEG alpha and theta rhythms. Students of the civil higher educational institution and military academy cadets were assessed (58 individuals in total). Cadets underwent a specific program focused on improving cold resistance (cold exposure training). Background EEG in the alpha and theta frequency ranges was recorded. Statistical data processing involved nonparametric comparison using the Mann–Whitney U test. The results were obtained suggesting that there were significant differences in spectral characteristics of alpha and theta rhythms between the group of foreign cadets and the controls. The cold exposure training program was effective in the group of Russian cadets, which had an effect on the cerebral homeostasis stability with some degree of instability of neurodynamic processes in the CNS. In foreign cadets, regular cold exposure training resulted in the pronounced disintegration of cortical-subcortical and intracortical interactions, as well as in the formation of binary alpha-theta structure of background EEG.

show abstract

Changes in cardiovascular indices and bioelectric activity of the brain in response to cold exposure in young men

Cited by 3 publications

References 11 publications

Heart Rate Variability, Time Estimation and Internet-Dependent Behaviour in 16–17-Year-Old Adolescents: A Study in Russian Arctic

Heart Rate Variability, Time Estimation and Internet-Dependent Behaviour in 16–17-Year-Old Adolescents: A Study in Russian Arctic

Meteorological Parameters and Hypertensive Crisis Risk: a Longitudinal Study for Prediction Model Developing

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

Contact Info

Product

Resources

About