Signaling responses to high and moderate load strength exercise in trained muscle

Lysenko, E.A.; Popov, D.V.; Vepkhvadze, T.F.; Sharova, A.P.; Vinogradova, O.L.

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 24 января 2020 г.

Авторы: Lysenko Evgeny A., Popov Daniil V., Vepkhvadze Tatiana F., Sharova Anna P., Vinogradova Olga L.
Журнал: PHYSIOLOGICAL REPORTS
Том: 7
Номер: 9
Год издания: 2019
Первая страница: e14100
DOI: 10.14814/phy2.14100
Аннотация: We examined signaling responses in the skeletal muscle of strength athletes after strength exercises under high and moderate load. Eight trained male powerlifters were recruited. The volunteers performed four sets of leg presses to volitional fatigue using a moderate load (65% 1-repetition maximum [1RM]) for one leg, and a high load (85% 1RM) for the contralateral leg. The work volume performed by the leg moving a moderate load was higher than that of the contralateral leg moving a high load. Biopsy of the m. vastus lateralis was performed before, and at 1, 5, and 10 h after, cessation of exercise. Phosphorylation of p70S6kThr389 , 4E-BP1Thr37/46 , and ACCS er79 increased after moderate load exercises, whereas phosphorylation of ERK1/2Thr202/Tyr204 increased, and that of eEF2Thr56 decreased, after high load exercises. Exercise under a moderate load and a high work volume activated mTORC1-dependent signaling in trained skeletal muscle, whereas exercise under a high load but lower work volume activated the MEK-ERK1/2 signaling cascade and eEF2.
Добавил в систему: Лысенко Евгений Алексеевич

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