00666naa#a2200181#i#450# EN\\bibl\105237 20251227204827.6 1994-4683 20251218b2025####ek#y0engy0150####ca RU Organization of sports training for qualified long jumpers using blood enzyme activity Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2025 5 с. Journal article local с разбега. 796.431.22 Grivtsov Lev Konstantinovich Sukhareva Svetlana Mikhailovna uchzapiski.lesgaft.spb.ru