00632naa#a2200205#i#450# EN\\bibl\121435 20260507161844.4 1994-4683 20230531b2023####ek#y0engy0150####ca RU PARAMETER CHARACTERISTICS OF THE LONG JUMP RUNUP AT YOUNG ATHLETES Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2023 4 с. Journal article local Прыжки в длину. 796.431.2 uchzapiski.lesgaft.spb.ru