Longer concentric action increases muscle activation and neuromuscular fatigue responses in protocols equalized by repetition duration

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dc.creatorLucas Túlio de Lacerda
dc.creatorCinara Gonçalves Costa
dc.creatorFernando Vitor Lima
dc.creatorHugo César Martins Costa
dc.creatorRodrigo César Ribeiro Diniz
dc.creatorAndré Gustavo Pereira Andrade
dc.creatorGustavo Henrique da Cunha Peixoto Cançado
dc.creatorMichael George Bemben
dc.creatorMauro Heleno Chagas
dc.date.accessioned2022-07-18T17:50:38Z
dc.date.accessioned2025-09-09T00:53:26Z
dc.date.available2022-07-18T17:50:38Z
dc.date.issued2019-06
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.identifier.doihttps://doi.org/10.1519/JSC.0000000000002148
dc.identifier.issn1064-8011
dc.identifier.urihttps://hdl.handle.net/1843/43383
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Strength and Conditioning Research
dc.rightsAcesso Restrito
dc.subjectEletromiografia
dc.subjectAmplitude de movimento articular
dc.subjectTreinamento
dc.subjectResistência física / fisiologia
dc.subjectForça muscular
dc.subjectFadiga muscular
dc.subject.otherElectromygraphy
dc.subject.otherAmplitude
dc.subject.otherFrequency
dc.subject.otherResistance training
dc.subject.otherAcute effect
dc.titleLonger concentric action increases muscle activation and neuromuscular fatigue responses in protocols equalized by repetition duration
dc.typeArtigo de periódico
local.citation.epage1639
local.citation.issue6
local.citation.spage1629
local.citation.volume33
local.description.resumoLacerda, LT, Costa, CG, Lima, FV, Martins-Costa, HC, Diniz, RCR, Andrade, AGP, Peixoto, GHC, Bemben, MG, and Chagas, MH. Longer concentric action increases muscle activation and neuromuscular fatigue responses in protocols equalized by repetition duration. J Strength Cond Res 33(6): 1629–1639, 2019—The aim of this study was to investigate the impact of protocols equalized by the repetition duration but composed of different concentric (CON) and eccentric (ECC) durations on muscle activation and neuromuscular fatigue. Seventeen males with previous experience in resistance training performed 3 training protocols (A — 2 second CON: 4 second ECC; B — 3 second CON: 3 second ECC; and C — 4 second CON: 2 second ECC) with the Smith machine bench press exercise, all with 3 sets, 6 repetitions, 3 minutes' rest, and 60% of 1RM. The normalized root mean square of the electromyographic signal (EMGRMS) and mean frequency electromyography (EMGMF) for pectoralis major and triceps brachii muscles were calculated for second and fifth repetitions in each set. The results showed an EMGMF decrease across the repetitions accompanied by a progressive increase of the EMGRMS across the repetitions for all protocols and muscles. The EMGRMS was higher in protocol C when compared with protocol A and B for pectoralis major. The EMGMF was lower in protocols B and C than in protocol A for pectoralis major throughout the sets and repetitions. A higher EMGRMS and a lower EMGMF were observed in protocols B and C compared with protocol A for triceps brachii, solely in the fifth repetition. In conclusion, training protocols conducted with the same repetition duration, but with different concentric and eccentric durations, produce distinct muscle activation and neuromuscular fatigue responses, in which performing longer concentric durations could be the more appropriate strategy to increase muscle activation and neuromuscular fatigue.
local.identifier.orcidhttp://orcid.org/0000-0002-0735-8131
local.identifier.orcidhttps://orcid.org/ 0000-0001-9293-7340
local.identifier.orcidhttps://orcid.org/0000-0002-0851-4730
local.identifier.orcidhttp://orcid.org/0000-0001-9425-4447
local.identifier.orcidhttp://orcid.org/0000-0003-3406-4558
local.identifier.orcidhttps://orcid.org/ 0000-0002-7024-3505
local.identifier.orcidhttps://orcid.org/0000-0002-1955-8990
local.publisher.countryBrasil
local.publisher.departmentEEF - DEPARTAMENTO DE ESPORTES
local.publisher.initialsUFMG
local.url.externahttps://journals.lww.com/nsca-jscr/Fulltext/2019/06000/Longer_Concentric_Action_Increases_Muscle.20.aspx

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