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Torque Production at Different Velocities as a Predictor of the Proportion of Fast-twitch Muscle Fibers in Skeletal Muscles of Athletes

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dc.contributor.author Lysenko E.A.
dc.contributor.author Vepkhvadze T.F.
dc.contributor.author Lednev E.M.
dc.contributor.author Bobyleva P.I.
dc.contributor.author Fedyushkina I.V.
dc.contributor.author Semenova E.A.
dc.contributor.author Generozov E.V.
dc.contributor.author Vinogradova O.L.
dc.contributor.author Popov D.V.
dc.date.accessioned 2021-02-25T20:35:03Z
dc.date.available 2021-02-25T20:35:03Z
dc.date.issued 2020
dc.identifier.issn 0362-1197
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/161857
dc.description.abstract © 2020, Pleiades Publishing, Inc. Abstract: The aim of the study was to evaluate the possibility to predict the muscle fiber-type proportion in men of different sports specialization by testing the maximal torque production by knee extensors at different velocities. For this reason the proportion of fast- and slow-twitch muscle fibers (MFs) in m. vastus lateralis of 23 athletes (11 endurance and 12 power athletes), as well the maximal torque production of knee extensors at various angular velocities in isokinetic mode were determined. The group of strength trained athletes significantly exceeded the group of endurance trained athletes in body mass, body mass index, volume of the m. quadriceps femoris, maximum torque production, and specific force at angular velocities 30, 180 and 300 degrees per second. In contrast to cross-sectional area (CSA) of slow-twitch MFs, the average CSA of fast-twitch MFs and the proportion of fast-twitch MFs in the group of power athletes significantly exceeded those in the group of endurance athletes. In the combined group of volunteers (n = 23), the proportion of fast-twitch MFs significantly correlated with the torque production at high angular velocities (r = 0.51 and p = 0.01 at 180 deg/s; r = 0.47 and p = 0.02 at 300 deg/s). We did not find any correlation between these parameters in the separate groups of power and endurance athletes. The results indicate a low accuracy in predicting the proportion of fast-twitch MF in m. vastus lateralis in athletes using the maximal torque production of knee extensors at different angular velocities. Significant correlation between the proportion of fast-twitch MF and maximal torque at high angular velocities in the general group (n = 23) was due to the presence of two significantly different subgroups.
dc.relation.ispartofseries Human Physiology
dc.subject fast-twitch muscle fibers
dc.subject muscle biopsy
dc.subject skeletal muscle
dc.subject torque production at different velocities
dc.title Torque Production at Different Velocities as a Predictor of the Proportion of Fast-twitch Muscle Fibers in Skeletal Muscles of Athletes
dc.type Article
dc.relation.ispartofseries-issue 6
dc.relation.ispartofseries-volume 46
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 689
dc.source.id SCOPUS03621197-2020-46-6-SID85099820565


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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