Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454

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PHYSICAL DEVELOPMENT OF THE CHILDREN OF 11-12 YEARS

Kuznetsova A.P. 1 Bukina L.G. 1 Kulakova O.S. 1
1 Yaroslavl State University n.a. P.G. Demidov
The paper presents the results of an anthropometric survey of children 11-12 years of Yaroslavl. We have measured and evaluated basic somatometric indicators (body length , body weight, chest circumference ) and physical development indexes (Ketle index, the index Pine). Average body length, body weight value of group, and Quetelet index was not differ significantly in sex groups. Chest circumference was significantly higher in both age groups of boys. The results have showed that there are high proportion of children wich had somatometric signs values beyond age norms. Students wich had extreme somatometric signs (up in different groups from 2,7 % to 18,0 %) are in risk group. Less than half of surveyed children ( 47,6 %) had a harmonious physical development, 27,4 % – disharmonious physical development ( we have observed more often that among the girls and this phenomenon was often associated with low body weight), 25,0 % - sharply disharmonious (we have observed more often that among the boys and this phenomenon was often associated with pronounced excess body weight).