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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/56759
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dc.creatorGustavo Ferreira Pedrosapt_BR
dc.creatorSandra Carvalho Machadopt_BR
dc.creatorRodrigo Cesar Ribeiro Dinizpt_BR
dc.creatorLucas Túliopt_BR
dc.creatorHugo César Martins Costapt_BR
dc.creatorAndre Gustavo Pereira Andradept_BR
dc.creatorMichael Bembenpt_BR
dc.creatorMauro Heleno Chagaspt_BR
dc.creatorFernando Vitor Limapt_BR
dc.date.accessioned2023-07-19T19:21:13Z-
dc.date.available2023-07-19T19:21:13Z-
dc.date.issued2020-07-20-
dc.citation.volume73pt_BR
dc.citation.issue3pt_BR
dc.citation.spage33pt_BR
dc.citation.epage44pt_BR
dc.identifier.doihttps://doi.org/10.2478/hukin-2019-0132pt_BR
dc.identifier.issn1640-5544pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/56759-
dc.description.resumoThis study compared the electromyographic response, the blood lactate concentration (BLC), and the maximum number of repetitions (MNR) between protocols of different concentric/eccentric duration taken to muscle failure. This comparison may help to understand how different concentric/eccentric duration may influence performance and the central and metabolic responses in trained men. Seventeen strength-trained men performed two protocols in a counterbalanced design. Three sets of the Smith bench press exercise were performed to failure at 60% of the one repetition maximum (1RM) using each protocol (4-s concentric/2-s eccentric [4 s: 2 s]; and 2-s concentric/4-s eccentric [2 s: 4 s]). The normalized root mean square (EMGRMS) and the mean frequency (EMGMF) of the electromyographic signals for the pectoralis major and the triceps brachii were compared in the first, middle, and last repetitions. The BLC was assessed at rest, during and after the test sessions. To compare the EMG and BLC, a 3-way ANOVA with repeated measures with a post hoc Tukey’s test was used. To compare the MNR performed across the sets, an ANOVA-type rank test with the Dunn’s post hoc test was used. The ANOVA indicated a greater EMGRMS for Protocol 4 s: 2 s in the pectoralis major and a lower EMGMF for Protocol 4 s: 2 s in the triceps brachii at the middle and last repetitions. Both protocols increased the EMGRMS and decreased the EMGMF across repetitions. Despite the results show different levels of activation and neuromuscular fatigue between protocols, the BLC and the MNR were similar.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.format.mimetypepdfpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentEEF - DEPARTAMENTO DE ESPORTESpt_BR
dc.publisher.departmentEEFFTO - ESCOLA DE EDUCAÇÃO FISICA, FISIOTERAPIA E TERAPIA OCUPACIONALpt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofJournal of Human Kineticspt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectPhysiologypt_BR
dc.subjectStrengthpt_BR
dc.subjectElectromygraphypt_BR
dc.subjectBench presspt_BR
dc.subjectCentral fatiguept_BR
dc.subject.otherFisiologiapt_BR
dc.subject.otherTreinamento de Forçapt_BR
dc.subject.otherFadigapt_BR
dc.titleThe effects of altering the concentric/eccentric phase times on EMG response, lactate accumulation and work completed when training to failurept_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://sciendo.com/article/10.2478/hukin-2019-0132pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-1955-8990pt_BR
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