%0 Journal Article %T Reliability of executing the "boomerang" element using a ribbon with backward-upward leg swing in rhythmic gymnastics %A Marhakshinova, V.N. %K rhythmic gymnastics, ribbon exercises, kinematic parameters, technical training %J Scientific notes of P. F. Lesgaft University %D 2026 %N 0 %P 6 %I National State University of Physical Education, Sports and Health named after P.F. Lesgaft