TY JOUR TI INFLUENCE OFFRONTAL AND SAGITTAL ASYMMETRY OF THE KNEE JOINT FLEXOR AND EXTENSOR MUSCLES ON THE EFFICIENCY OF THE PERFORMANCE OF SPECIAL PREPARATORY AND COMPETITIVE EXERCISES BY HIGHLY QUALIFIED BIATHLONISTS KW high-class biathletes KW asymmetry KW knee flexors and extensors KW sagittal plane KW biodex systems 4 pro JO Scientific notes of P. F. Lesgaft University AU Kryuchkov, A.S. AU Rostovtsev, V.L. AU Myakinchenko, P.E. AU Myakinchenko, E.B. AU Fendel', T.V. PY 2023 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft