A Shift of the Parameters of the Cardiovascular System in Adolescents during the Period from 2004 to 2020 as a Result of Modification of Educational Environment

The purpose of our study was to search for possible changes in the parameters cardiovascular system adolescents during period from 2004 2020 against background introduction digital technologies into educational environment. Methods: A comparative analysis female and male aged 13.9 15.4 years carried out (57 53 2020). We used a spiroartheriocardiorythmograph allowing recording heart rate (HR) blood pressure (BP) spectral HR variability systolic (sBP) diastolic (dBP) BP. were recorded at rest sitting position over two min. All studies performed school hours February-March. Results: An increase mean sBP values an proportion with BP