FIELD: medicine.;SUBSTANCE: body weight in kg, waist in cm and hips in cm are measured to calculate individual physical development index (IPD index) in pre- and pubertal girls: total ratio body weight for analysed period (m2) to body weight for previous year (m1), waist for analysed period (W2) to waist for previous year (W1) and hips for analysed period (H2) to hips for previous period (H1) divided by three. If the result is less than 1.1 and more or equal to 1.0, development corresponds to harmonious, while the index less than 1.0 shows arrested development and more than 1.1 advanced.;EFFECT: possibility to estimate individual dynamics of physical development of girls in pre- and pubertal girls taking sports at physical training lessons only.;3 ex
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