Pharmacophore an International Research Journal
Due to its high biological efficiency, extremely high-frequency electromagnetic radiation is used in medical practice to treat a wide range of diseases, including the cardiovascular system. The purpose of this work was to study the indicators of heart rate variability during the recovery period after a bicycle ergometric test under the conditions of preventive exposure to low-intensity electromagnetic radiation of extremely high frequency. The study involved 120 young girls in the intermenstrual period. The girls in the experimental group were exposed to 30 minutes of low-intensity electromagnetic radiation of extremely high frequency for 10 days. Then all the subjects took part in bicycle ergometric training. In the experimental group, a decrease in the stress index by 36%, and an increase in the power of the spectrum by 64% was noted, which indicates the activation of the parasympathetic division of the vegetative-vascular nervous system and normalization of vegetative effects on the heart. In the experimental group, compared with the control group, there was a less pronounced change in the considered parameters of cardiac activity.
