00897naa#a2200193#i#450# EN\\bibl\97811 20250908223920.1 1994-4683 20250827b2025####ek#y0engy0150####ca RU The influence of a differentiated approach and the conditions of conducting classes on the overall endurance of students Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2025 7 с. Journal article local Основные теоретические концепции физического воспитания. 796.011.2 Общие вопросы физической культуры и спорта. 77.01 grnti Nikazachenko Aleksey Leonidovich Markova Olga Aleksandrovna uchzapiski.lesgaft.spb.ru