Proceedings of the International scientific and practical conference “Science in the Modern World” (January 19-21, 2026) / Publisher website: www.naukainfo.com. - Cambridge, United Kingdom, 2026. - 203 p.

170 PHYSICAL EDUCATION, SPORTS AND PHYSICAL THERAPY UDC 796.412:796.012.1 Olha Kvach Master’s degree Nika Rhythmic Gymnastics LLC Owner - Head Coach https://orcid.org/0009-0000-5252-7099 BIOMECHANICAL ANALYSIS OF ROTATIONAL ELEMENTS IN RHYTHMIC GYMNASTICS: KINEMATIC AND POSTURAL FACTORS OF TURN STABILITY Abstract. The article is devoted to the biomechanical analysis of rotational elements in rhythmic gymnastics with an emphasis on kinematic and postural factors that determine turn stability. The paper examines the specifics of performing turns under conditions of a minimal support area and increased coordination demands characteristic of this sport. It is shown that the stability of rotational movement is formed as a result of the coordinated action of mechanisms controlling body position and the spatial organization of movement. The role of the kinematic characteristics of rotation, in particular the spatial position of body segments and the maintenance of the vertical axis of rotation, in ensuring turn stability is analyzed. Special attention is given to postural control as a leading factor in the regulation of balance during the performance of rotational elements. The significance of the interaction between the body’s center of mass and the center of pressure as the biomechanical basis of rotational movement stability is substantiated.