Katashinskaya L.I. 1
Gubanova L.V. 1
1 Ershov Ishim Teachers Training Institute
The assess of functional condition of schoolchildren`s organism using the method of variation cardiointervaleometry was carried out. The variability of cardio rhythm was researched at students of 14-16 years old at the Ishim comprehensive lyceum. The research revealed that parasympathic influences in the regulation of cardio-vascular system dominate at girls of 14 years old, as for the boys of the same age the influences of a sympathic department of vegetative nervous system were dominating. As girls are growing up the role of sympathic influences in the regulation of cardio-vascular system was increasing. The state of mechanisms regulating cardio rhythm was assessed basing on the standard deviation (SD). The researched schoolchildren of 14 years old of both sexes had standard deviation which was approaching an average norm. Standard deviation of older boys was approaching the highest point of the norm, it indicates that the parasympathic influences of the vegetative nervous system on the regulation of cardio rhythm at boys were growing. Older girls demonstrated an undulating change of the level of standard deviation. Negative functional state was revealed in all age groups of boys and in the group of girls of 15 years old. As for older teenagers the number of children referred to this group was larger. Critical level of functional state was more often for boys than for girls excepting the age group of 16 year old ones. The largest number of teenagers having the critical functional state – 31,3 % was fixed with boys of 15 years old. It was adjudged that growing up is accompanied by the worsening of functional state of organisms of the researched schoolchildren.