Feathures of using of mobile communication (intensity of radiation, temporary modes) and their influence on the health of modern younger schoolchildren

Abstract

In a one-stage study of 135 Moscow schoolchildren of 1st -3rd grade (2017-2018) the meanings of energy flux density (EFD) of individual mobile phones (MP) was measured, and modes of MP use and health indicators were determined by questionnaires. The EFD maximal values exceeded the norm for adults (100 μW/cm2) in 43.5 % of children. In most children, the total daily duration of calls (TDC) reached 6 minutes, their number (NC) 1-4 and the duration of each (DC) 1-4 minutes. The positive correlations (p < 0.04) were found between the time mode of MP use and health violations. They were more numerous in the group of children with normal anamnesis (80 people), in which the influence of MP was not masked by an abnormalities of early development. These correlations were found for the incidence of headache (NC r = 0.24, TDC r = 0.26) and of anxiety (DC r = 0.22). The incidence of giddiness positively correlated with the PFD (r = 0.24). Negative correlations (p < 0.04) were found of the frequency of inattention, forgetfulness, sleep disorders with the years of MP use (r from -0.24 to -0.36), and also positive correlations were found for the frequency of headache and of anxiety with the age of children (r= 0.27). The results attest to the predominantly negative impact of MP radiation on the children central nervous system and require the regulation of the MP use in childhood.