Postactivation Potentiation Improves Acute Resistance Exercise Performance and Muscular Force in Trained Men

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dc.contributor.authorConrado de Freitas, Marcelo [UNESP]
dc.contributor.authorRossi, Fabricio Eduardo
dc.contributor.authorColognesi, Lucas Antônio [UNESP]
dc.contributor.authorde Oliveira, João Vitor N S [UNESP]
dc.contributor.authorZanchi, Nelo Eidy
dc.contributor.authorLira, Fabio Santos [UNESP]
dc.contributor.authorCholewa, Jason M.
dc.contributor.authorGobbo, Luís Alberto [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversity of Western São Paulo (UNOESTE)
dc.contributor.institutionFederal University of Piauí (UFPI)
dc.contributor.institutionCoastal Carolina University
dc.date.accessioned2021-06-25T10:29:30Z
dc.date.available2021-06-25T10:29:30Z
dc.date.issued2021-05-01
dc.description.abstractABSTRACT: Conrado de Freitas, M, Rossi, FE, Colognesi, LA, de Oliveira, JVNS, Zanchi, NE, Lira, FS, Cholewa, JM, and Gobbo, LA. Postactivation potentiation improves acute resistance exercise performance and muscular force in trained men. J Strength Cond Res 35(5): 1357-1363, 2021-The purpose of this study was to investigate the effects of heavy back squat (90% one repetition maximum [1RM]) postactivation potentiation (PAP) on acute resistance exercise performance and force production in recreationally trained men, and to verify the relationship between maximal strength and the PAP response. Ten resistance-trained men randomly completed 4 experimental trials: (a) back squats without PAP (No-PAP), (b) back squats with PAP, (c) maximum voluntary isometric contraction (MVIC) of the quadriceps without PAP, and (d) MVIC with PAP. Back squats were performed with 4 sets at 70% of 1 RM with 2 minutes of rest interval. The number of squats repetitions performed was recorded for each set, and a total number of repetitions were calculated to analyze performance. Maximum voluntary isometric contraction was measured using electronic dynamometer, and the peak force and mean force were recorded. Blood lactate concentration was analyzed presquat and postsquat exercise. Repetitions performed in the first set was significantly (p < 0.001) greater in the PAP condition (22.00 ± 5.14) compared with No-PAP (15.50 ± 5.10), which resulted in significantly (p = 0.001) more total repetitions performed in the PAP (56.20 ± 17.3) condition compared with No-PAP (48.80 ± 14.5). Maximum voluntary isometric contraction peak was higher in PAP than in No-PAP (PAP = 765.7 ± 147.8 vs. No-PAP = 696.8 ± 131.5 N, p = 0.006). No significant correlations were observed between back squat 1RM relative to body mass and the PAP response in squat and MVIC. There were no significant differences in lactate concentration between conditions. In conclusion, PAP resulting from a heavy load prior back squat exercise improved total volume during resistance exercise. In addition, PAP was effective to increase force production during MVIC, but there was no relationship between relative 1RM values and the PAP response in trained men.en
dc.description.affiliationSkeletal Muscle Assessment Laboratory (LABSIM) Department of Physical Education School of Technology and Sciences São Paulo State University (UNESP)
dc.description.affiliationDepartment of Physical Education School of Technology and Sciences São Paulo State University (UNESP), Post Graduation Program in Movement Sciences
dc.description.affiliationDepartment of Nutrition University of Western São Paulo (UNOESTE)
dc.description.affiliationDepartment of Physical Education Immunometabolism of Skeletal Muscle and Exercise Research Group Federal University of Piauí (UFPI)
dc.description.affiliationExercise and Immunometabolism Research Group Department of Physical Education São Paulo State University (UNESP)
dc.description.affiliationDepartment of Physical Education, Laboratory of Cellular and Molecular Biology of Skeletal Muscle (LABCEMME), São Luis, Brazil; and
dc.description.affiliationDepartment of Kinesiology Coastal Carolina University
dc.description.affiliationUnespSkeletal Muscle Assessment Laboratory (LABSIM) Department of Physical Education School of Technology and Sciences São Paulo State University (UNESP)
dc.description.affiliationUnespDepartment of Physical Education School of Technology and Sciences São Paulo State University (UNESP), Post Graduation Program in Movement Sciences
dc.description.affiliationUnespExercise and Immunometabolism Research Group Department of Physical Education São Paulo State University (UNESP)
dc.format.extent1357-1363
dc.identifierhttp://dx.doi.org/10.1519/JSC.0000000000002897
dc.identifier.citationJournal of strength and conditioning research, v. 35, n. 5, p. 1357-1363, 2021.
dc.identifier.doi10.1519/JSC.0000000000002897
dc.identifier.issn1533-4287
dc.identifier.scopus2-s2.0-85105104094
dc.identifier.urihttp://hdl.handle.net/11449/206279
dc.language.isoeng
dc.relation.ispartofJournal of strength and conditioning research
dc.sourceScopus
dc.titlePostactivation Potentiation Improves Acute Resistance Exercise Performance and Muscular Force in Trained Menen
dc.typeArtigo

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