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© 2021. This work is published under https://creativecommons.org/licenses/by-nc-nd/3.0 (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Research aim is to conduct a comparative screening study of the constitution types, anatomical parameters, body components, and motor qualities of adolescent female students of different studying years to establish the nature of sexual dimorphism population inversion. Research materials and methods. 1263 girls, aged 20.3 ± 0.3, students of the Irkutsk Technical University (Russia) enrolled in 2009 (n=759) and 2019 (n=504), respectively, participated in the survey. Anthropometric measurements were performed, index sexual dimorphism (ISD), body mass index (BMI), body component composition of the girls were calculated, motor qualities, weekly physical activity and strength of the girls' hand muscles were evaluated. The Tanner sexual dimorphism index was used to determine all girls' sexual somatotype. Research results. In 2019 population, a reduction in the number of girls with gynaecaner sexual somatotype, increasing the number of girls with andromorphous type, compared to the population in 2009. The number of girls with mesomorphic somatotype is approximately the same and exceeded 60%. Girls with mesomorphic and gynaecaner sexual somatotype muscle strength and power indices of both hands were significantly lower in 2019 compared to these parameters of girls having same sexual somatotype in 2009. Students of 2019 population with andromorphous sexual somatotype showed less fat component in the body and more muscular one in comparison with the results of a survey of girls in 2009. In the girls' body of 2019 population with mesomorphic and gynaecaner types of sexual dimorphism less muscle component and more fat one, compared with the results obtained from the examination of girls in 2009. In girls with andromorphous sexual dimorphism, all motor tests results (with the exception of active flexibility test) are significantly higher than the results of girls in 2009. Girl with mesomorphic somatotype and gynaecaner somatotypes, surveyed in 2019, did not have an optimal weekly motor mode in the amount of 150 minutes and have significantly low indicators values in four motor tests than girls with the same sexual somatotype in the population 2009. Conclusions. The results of the girls from different populations survey showed differences in sexual dimorphism inversion. The trend for muscularization is greater in the girls of the 2019 population. Between the girls' populations, there are differences in the component composition of the body, motor qualities and physical activity of girls with different somatotypes. The research results expand the knowledge about the population changes in sexual dimorphism in girls from different generations and its integration with physical education. Our research materials can be used in the pedagogical practice of young students' physical education, which will increase the effectiveness of students' development of PE discipline.

Details

Title
Comparative screening of sexual dimorphism inversion of girls from different populations
Author
Kolokoltsev, Mikhail 1 ; Gunchin, Batbaatar 2 ; Dubovaya, Anna 3 ; Vorozheikin, Anton 4 ; Romanova, Elena 5 ; Kokhan, Sergey; Vodenitcharova, Alexandrina; Ivanov, Evgeni; Aganov, Sergey

 Department of Physical Culture, Irkutsk National Research Technical University, RUSSIA 
 Vice president for Academic Affairs, Mongolian National University of Medical Sciences, Ulaanbaatar, MONGOLIA 
 Department of Pediatrics, M. Gorky Donetsk National Medical University, Donetsk, UKRAINE 
 Department of Information Technologies, Kaliningrad Institute of Management, RUSSIA 
 Department of Physical Education, Altai State University, Barnaul, RUSSIA 
Pages
1688-1694
Section
Original Article
Publication year
2021
Publication date
Jun 2021
Publisher
Universitatea din Pitesti
ISSN
22478051
e-ISSN
2247806X
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2571153475
Copyright
© 2021. This work is published under https://creativecommons.org/licenses/by-nc-nd/3.0 (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.