TY JOUR TI Comparative analysis of the kinematic parameters of leg propulsion during forward somersaults from a solid and elastic support KW artistic gymnastics KW team gymnastics KW forward somersault KW leg take-off JO Scientific notes of P. F. Lesgaft University AU Semenov, D.V. AU Shlyakhtov, V.N. AU Streletskaya, Y.S. PY 2025 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft