PhD, Associate Professor I.S. Krasnorutskaya¹
Dr. Biol., Professor M.G. Tkachuk¹
Dr. Hab., Professor A.G. Levitsky¹
PhD, Associate Professor I.V. Pyzhova²
Yu.L. Rysev^2
1Lesgaft National State University of Physical Education, Sport and Health, St. Petersburg
²Peter the Great Saint Petersburg Polytechnic University, Saint Petersburg

Objective of the study was to assess the impact of dance sport classes on the main morphofunctional and psychological characteristics of girls engaged in ballroom dancing.
Methods and structure of the study. A total of 65 adolescent girls from St. Petersburg school No. 204 were sampled for the study: Experimental Group - 35 subjects, Control Group - 30 subjects. The girls’ motor mode was characterized as traditional (two Physical Education classes per week). Their somatotypes were evaluated by the Heath-Carter somatotype evaluation method. The Spielberger-Hanin test was used to identify the subjects' levels of trait and state anxiety. The adaptive potential of the circulatory system was determined based on the index of functional changes.
Results and conclusions. Based on the morphofunctional indicators reflecting the peculiarities of functional mechanisms during the bodily adaptation, the authors were able to determine the level of the subjects’ adaptive potential, as well as the indicators of the level of functional and psychological fitness of young dancers. It was found that girls with different somatotypes have different levels of anxiety, motor activity, and adaptive potential.
As opposed to the Control Group girls, those engaged in ballroom dancing had a state of emotional stability, low levels of trait anxiety and psychosocial tension. The Experimental Group girls with the mesomorphic somatic type were found to have minor functional changes, and average levels of the state and trait anxiety, which indicated a high level of adaptive capabilities.

Keywords: adaptive potential, psychoemotional state, somatotype, young athletes, dances.

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