ELEMENT HOMEOSTASIS AND PROBLEMS OF ADAPTATION OF CHILDREN AND TEENAGERS IN THE CONDITIONS OF THE RAISED PHYSICAL ACTIVITY
An activity of practically all regulatory systems of the body somehow or other depends on the microelements balance. Survey groups consisted of sportsmen (n=100), professional swimmers aged 7-11 and 12-17 years of different sex. Multielement analysis of hair was conducted through X-ray fluorescence analysis, which was non-invasive method for estimate of microelement status of the body in a specific time interval. In all age groups there was observed zinc deficiency regardless sex and physical activity. It should be mentioned the decrease of iron in the organism of swimmers, particularly in the age group of 12-17. There was registered a complex relationship between the elements Ca/K; Ca/Zn; Ca/Cu; Ca/Fe depended on the physical activity.