The development of technologies using the electromagnetic field (EMF) of the radio frequency range has become a leading trend related to the need for wireless data transmission. This made it possible for distance learning of schoolchildren and students in a dangerous epidemic situation. Accumulated data on the sensitivity of the human body to the action of EMF. The purpose of the work is to assess the conditions of teaching schoolchildren in computer science classrooms, as well as the impact of online learning on the health of high school students and university students. Based on the results of an online survey of schoolchildren and students according to the author’s questionnaire, a database was formed and an assessment of the conditions of distance learning was carried out. With the use of instrumental research, an assessment of the learning conditions in computer science classrooms was carried out. The materials were processed using the reliability criterion χ2 and the health risk assessment RR. Control data in computer science classrooms showed non-compliance of temperature, air humidity, air ionization, illumination, noise with regulatory requirements, except for EMF levels. With online learning, a high duration of stay of high school students and students in a digital environment has been established, including the learning process, homework, and leisure time on the Internet. In the structure of complaints related to studying online and doing homework, there were: visual impairment over the past year, headaches, back pain, irritability, eye fatigue, a feeling of dryness in the eyes. The time for sleep and physical activity decreased. Data have been obtained confirming the need to protect the health of students in a digital environment with the provision of safe conditions for visual work, limiting the time of use of digital devices, increasing the literacy of all users.
The social and hygienic features of life and health of adolescents living in four regions of the Russian Federation (Moscow, St. Petersburg, Omsk and Pskov regions) have been studied. The regional features of life on the peculiarities of the family, the prevalence of unhealthy lifestyles, and satisfaction with the organization of training and professional orientation of students, employment, as well as indicators of health and quality of life associated with health were studied. The best indicators of health and quality of life associated with health were observed in adolescents of Omsk region, with the best characteristics of living conditions. The importance of the development of comprehensive regional prevention programs to reduce the risks to the health of adolescents is substantiated.
Background: The wide use of digital tools in teaching requires a hygienic assessment of their impact on the health and lifestyle of students. The objective of the study was to assess the impact of the digital environment on the health and lifestyle of adolescents, depending on the duration of use of electronic learning tools in educational and leisure activities. Methods: An anonymous online questionnaire-based survey of 111 high school and college students was conducted to establish their screen time in the educational process, when performing homework and at leisure, as well as indicators of wellbeing and lifestyle and health complaints. In addition, learning conditions in college computer classes, such as illumination, microclimate, air ionization, levels of electromagnetic fields, airborne concentrations of phenol and formaldehyde were assessed. Modern statistical methods (Student’s t-test, chi-squared test) and methods of evidence-based medicine were applied. Results and discussion: Almost 66 % of the respondents reported using electronic teaching aids (a computer or laptop) at school three or more times a week and severer symptoms of fatigue after such classes. Complaints typical of adult professional users were not common in adolescents, except for visual impairment over the past year (48.6 %). In computer classes, microclimate parameters were far from being optimal: illumination was lower than the regulated values; the levels of electromagnetic fields, ionization, and indoor air concentrations of phenol and formaldehyde were comparable to the appropriate standard values. We observed a high involvement of adolescents in the use of digital tools at home for educational purposes and especially at leisure. The intensive use of Internet (more than 4 hours a day) was associated with frequent complaints of headaches, visual impairment, sleep disorders, and poor self-assessment of the physical shape that may be attributed to the established decreasing number of teenagers engaged in physical culture and sports. Conclusion: The length of time spent in the Internet space for homework and leisure activities affects students’ health and lifestyle. This indicates the need to develop and implement preventive and educational programs for adolescents in order to minimize health risks posed by digital environment and confirmed by outcomes of distance learning.
Hygienic features of the employment of teenagers living in four regions of the Russian Federation (Moscow, St. Petersburg, Omsk and Pskov) have been studied. Regional peculiarities in the prevalence and structure of employment are established. It is confirmed that work in adolescence can have a negative impact on lifestyle and health. In the group of working adolescents, there is a higher prevalence of behavioral risk factors (smoking, drinking alcohol, drugs, lack of sleep, etc.). Adolescents with work experience have lower health indicators. The analysis of relative risk (RR) and etiologic fraction (EF) showed that the higher health risks are for adolescents who work continuously throughout the year.
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