VZAIMOSVYaZI MEZhDU MINERAL'NOY PLOTNOST'Yu KOSTEY i rostom, massoy tela,a takzhe pokazatelyami sostava tela u detey

Abstract

The changes in mineral mass, muscles, connective and adipose tissues have been studied in 1280 children of both sexes at the age of 5-20 years using GE/Lunar (USA) X-ray bone densitometer. No differences in mineral density (MD) of the skeleton have been revealed among boys and girls during the puberty period. The most intensive mineral density maturation was noticed in girls at the age 11-13 years and in boys at 14-17 years. Significant correlations have been found between mineral mass and body area as well as mineral mass and body weight.
1800 adults at the age of 21-85 years have been studied in order to investigate mineral mass/soft tissue mass (MM/STM) index in dynamics. MM/STM index was 0,041 at the age of 16 years, 0,061 at the age of 21-25 years and remained stable up to 50 years. At the age from 51 till 65 years it has been slightly reduced (0,050). At the age from 66 till 80 years it has been reduced more sharply up to 0,040.
The ratio mineral mass/adipose tissue mass was maximal at the age of 21-25 years - 0,102 and started to reduce up to 0,095 at the age of 26-30 years owing to the fat accumulation in women. At the age of 50 the index was 0,070, at the age of 80 years - 0,051.