В статті представлені результати статевого розвитку юних спортсменок 11-15 років, які займаються лижними гонками та біатлоном. Метою роботи явилося вивчення показників ендокринної системи організму та їх формування у юних спортсменок 11-15 років під впливом фізичних навантажень. Вивчено сімейний та особовий анамнез, вираженість розвитку вторинних статевих ознак у лижниць-гонщиць і біатлоністок 11-15 років.
As a result, we determined that the mother’s age at birth was 24-26 years, of which 38 % had violations of the ovarian-menstrual cycle, 27% of uterine leukoma, 15 % of
pregnancy failure, 14 % of the violation in the cardiovascular system, 23 % of the endocrine system, 6 % in the liver, 38 % of the gastrointestinal tract. Of all the girls, 79 % had a low material condition, 58 % incomplete family stock, 82 % malnutrition, 43 % psycho-trauma in adolescence, 21 % of the genitourinary system, 19 % of the gastrointestinal tract, 8% high infection index due to viral and purulent tonsillitis, which were transferred in adolescence, which subsequently influenced the character and its formation. The analysis of the sexual development of young athletes aged 11-15 revealed that 78 % had standard sexual development at 11 years old, 65% at 12 years old, 51 % at 13 years old, 48 % at 14 years old, 43 % at 15 years old. The average indicator of the severity of the development of secondary sexual characteristics of young athletes 11, 12, 13, 14 and 15 years old showed that at 11 and 12 years old girls had mammary glands, pubic hair, axillary hair development, and the formation of menstrual function corresponded to Ma0-P0-Ax0 -Me0, at the age of 13 − Ma1-P1-Ax0-Me0; at the age of 14 − Ma1-P1-Ax2- Me1; at the age of 15 − Ma3-P3-Ax3-Me1.