Distance learning (DL) changed the work-rest balance of teachers, increased risks of deterioration of their health and emotional burnout (EB). This study aimed to investigate the prevalence of risk factors affecting health and emotional state of teachers engaged in DL, as well as subjective assessment of the significance of these factors by teachers. We have surveyed teachers during traditional, in-person learning (TL) period (n = 224) and DL (n = 619), and took anthropometric measurements of 45 teachers during TL and 72 teachers when DL ended. EB was studied in 72 teachers with the help of V.V. Boyko questionnaire. Statistical processing was enabled by the Statistica 13 PL package, Student's t-test, χ2 test; to identify the relationship between indicators, we relied on regression analysis, effect occurrence probability calculation. Less than half of teachers are aware of the health risk factors (low level of physical activity — 36.1%, poor nutrition — 29.2%, lack of knowledge on disease prevention — 6.9%). After DL ended, only 30% of teachers considered themselves healthy; 13.1% reported lack of EB symptoms. An increase in the average body mass index value was established. Teachers underestimating EB and health risk factors were 2.3 times more likely to grow obese (OR = 0.40; 95% CI = 0.22–0.70). The study highlights high hygienic value of physical activity as a controllable health risk factor. Raising teachers' awareness of health preservation practices will help prevent deterioration of their health, development of EB and increase the efficiency of their professional activity.

The aim of the study is to establish a trend in the body mass index of schoolchildren in different regions of the country. The study was carried out in 2021 as part of the all-Russian monitoring of the physical development of schoolchildren aged 7–17 years (the number of boys - 30,965, the number of girls - 33,290). The statistical software package Statistica 13 PL has been used for data processing. BMI indicators have been established for Russian schoolchildren. Some regional differences in BMI indicators and the influence of the organization of medical support factor in the region have been shown. The Pearson correlation coefficients between the BMI of schoolchildren and the availability of doctors and nurses per 10,000 of population were -0.63 and -0.39 (p ≤ 0.05). The age and gender standards for BMI for Russian schoolchildren have been updated. A trend towards higher BMI rates in various subjects of the Russian Federation has been revealed, which may be due, among other things, to indicators characterizing the organization of the medical population in the region.