INDICATORS OF PHYSICAL DEVELOPMENT OF SCHOOL-CHILDREN WITH LATENT IRON DEFICIENCY AND MILD DEGREE OF IODIDE EFFICIENCY

The article represents the results of the study of physical development of 68 boys and 65 girls aged 6-18 years with proper iodine and iron supply (control group), latent iron deficiency, mild degree of iodine deficiency and their combination. All the children were divided into four groups: 1st – boys and girls with appro-priate iodine and iron supply (control group), 2nd – children with limited iodine supply without iron deficiency, 3rd – with proper iodine supply and latent iron deficiency, 4th – with mild iodine deficiency and latent iron deficiency. In order to study thyroid gland functioning in blood serum samples, the contents of thyroid hormones was determined: free T3 (fT3) and T4 (fT4), thyroid stimulating hormone adenohypophysis (TSH). To determine the rate of iodine supply the index of urinary iodine excretion in urine single portions the median urinary iodine (Me) was determined. For evaluation of iron metabolism in children the level of hemoglobin (Hb) in capillary blood, serum iron (SI) level, common-binding capacity of serum (CBCS) was measured. Condition of iron stores was characterized by the level of serum ferritin (SF) level. Physical development was described by the main anthropometric indices (length and weight of the body, circumference of the chest) and the harmony of development was determined. It has been established that in schoolchildren of the control group, regardless of age and gender characteristics, harmonic physical development (HPD) prevails. In children with mild iodine deficiency (33% of girls and 44% of boys aged 6-11) disharmonious physical development was found, mainly with excess body weight. In 25% of schoolchildren with latent iron deficiency with the same frequency there are children with both deficiency and excess body mass, regardless of gender peculiarities. In children with combined microelementosis, the disharmony of physical development (predominantly overweight) was determined in 50% of the subjects. A similar tendency is observed in older schoolchildren, but the proportion of boys increases with the excess body weight. Thus, the deficiency of iodine and iron is accompanied by changes of physical development and is characterized by an increase of the proportion of schoolchildren with disharmonious physical development (mainly under conditions of iodine deficiency). Combined deficiency of microelements is accompanied by more significant changes of physical development.