%0 Journal Article %T Improving breaststroke swimming speed by developing explosive power of lower limb muscles during the stage of sports specialization %A Maretsky, S.Y. %K swimming, breaststroke, youth sports, swimming technique, explosive power, strength training %J Scientific notes of P. F. Lesgaft University %D 2025 %N 0 %P 7 %I National State University of Physical Education, Sports and Health named after P.F. Lesgaft