| Objective Study the state of sexual and body development, and body composition during Mongolian students adolescence, andalyse the developing rules and realize their inter relations. Deeply research their growth,development, make measures on children and teens health and health protection and supply the reference data.Methods Health Mongolian boy students 355 from both middle and primary schools in Damaoqi and Siziwangqi have been investigated at random.On the detail rules of Monitoring the State of All National Students Physique and Health, measure their height, weight, seated height, chest, the thickness of folded skin and calculate the body composition, measure testis,penis,ampithair,the sexual indexs,which are divided into different sexual developing periods.On Li Guzens Bone Age Calculation; their age are measured, the age periods, and the levels of salivary testroteron of sythetical study are measured by radio immunassay.There has an internal relationship between sexual development. and body development and body composition during the adolescence.Result Every index increases with the ages and also with different developing periods. During the II—III periods every sexual index increases quickly.There is an increasing tendedency to salvary testosterone of Mongolian boy students with the age and every sex character also with it. There has moderate relationship between salvary testosterone and every sexual imdex. With the increasing sexual devel lopment ,body growth has an increasing tendency Body growth is the fastest development, sexual development being II period. Their thin weight increases markably. Genenal body fat is of increasing slowly,while rate of body fat is ofdecreasing.However the amount of testosterone and sexual imdexes have relation to the body growth and body composition at certain dgree. |
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