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.

174 active movements. Under such conditions, the balance maintenance system functions in a mode of constant compensation for disturbances caused by both internal (movements of body segments) and external factors. From a biomechanical perspective, rotational elements performed on the toes of one leg with the free leg fixed in high positions are particularly complex. Such positions induce additional lateral oscillations in the hip joint of the supporting leg, limiting the stabilization capabilities characteristic of double-support positions. During the turn, these oscillations may be amplified under the influence of angular acceleration, which directly affects the trajectory of the body’s center of mass and reduces rotational stability. Despite the evident importance of postural control for the quality of turn performance, scientific research in rhythmic gymnastics has insufficiently systematized the relationship between kinematic parameters of rotation and postural factors of stability. The majority of studies focus on the analysis of individual balancing positions or general characteristics of balance, whereas a comprehensive biomechanical approach to studying the stability of rotational elements remains limited. In this regard, the study of biomechanical mechanisms that ensure turn stability in rhythmic gymnastics, taking into account both the kinematic characteristics of movement and postural strategies of balance maintenance, is relevant. Such an approach allows for a deeper understanding of the factors that determine the quality of performing rotational elements and creates a scientific basis for improving the methodology of gymnast training. It should be noted that balancing elements performed in the relevé position have important technical significance in rhythmic gymnastics, as they combine a minimal support area with high demands on body position stability. Maintaining balance under such conditions is possible only with precise control of the spatial alignment of the body, when the vertical projection of the center of mass remains within the support surface of the supporting foot. This requirement is fundamental for