FEATURES OF THE DYNAMICS OF INDICATORS OF TOTAL BODY SIZE IN BOYS AND GIRLS AGED 17-22 YEARS

Abstract

Objective - to identify the characteristics of the dynamics of indicators of total body size in students aged 17-22 years with different somatotypes. Material and methods. The study was conducted during 2010-2018 and was based on the results of prospective observations of morphological indicators of 530 students (240 boys and 290 girls) aged 17-22 during the period of study at the university. Body types were determined by the method of V. G. Shtefko and B. A. Ostrovsky (1929) as presented by S. S. Darskaya (1975). Results. Among the examined students, an increase in body length (BL) was found in 49,2 % of young men, and in 35,6 % of girls; the height gain stopped by 21-22 years in boys and by 19-20 years in girls. The majority of students during their study at the university showed increases in body mass and chest circumference. Boys and girls who demonstrated no change or even a decrease in these indicators during the study period were also found. In most senior students, gains in body weight and chest circumferences slowed down when the height growth ceased, but did not stop. It led to an increase in the number of overweight students, which is confirmed by the increase in the number of young people with an alimentive body type and high BMI values, more pronounced among boys. Students with a thoracic body type, which was the most common and dynamic somatotype in the studied sample, showed significant gains in total body size. Similar growth dynamics was found in boys with muscular body type. During training at the university, the number of young people with thoracic body type decreased, while the proportion of students with muscular and alimentive somatotypes increased. During the period of study in high school, the body type changed in 14,1 % students. Conclusions. The dependency of gains in indicators of total body size among boys and girls aged 17-22 on body type was revealed. The body type influenced the speed and direction of the dynamics of indicators of body length, weight and chest circumference.

Keywords

students / total body size / somatotypes / growth / dynamics of indicators

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Mikhailova S.V.