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Effects of two isometric strength training methods on jump and sprint performances: a randomized controlled trial

2021Journal article Open access
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dc.contributor.authorLum, Danny
dc.contributor.authorBarbosa, Tiago M.
dc.contributor.authorJoseph, Ranald
dc.contributor.authorBalasekaran, Govindasamy
dc.date.accessioned2021-03-16T10:46:15Z
dc.date.available2021-03-16T10:46:15Z
dc.date.issued2021
dc.description.abstractIsometric strength training (IST) with rapid non-sustained contraction (RIST) is effective in improving the ability to generate force rapidly. However, the neuromuscular adaptation of IST with sustained contraction (SIST) and RIST is not known. Therefore, the aim of the study was to compare the neuromuscular adaptations of RIST with SIST. Methods Thirty-three national floorball players (23.9 ± 3.1 years old; 1.69 ± 0.08 m; 64.6 ± 11.1 kg) were recruited for this study. Pre- and post-test included countermovement jump (CMJ), 30-m sprint (TT30), isometric squat at 90° (ISqT90) and 120° (ISqT120) knee angles. They were randomly assigned to either control (Con) (n = 9), RIST (n = 12) or SIST (n = 12) group and performed 12 sessions of intervention training. All groups performed the same sets of exercises, but RIST and SIST had to perform ISqT with and without sustained contraction, respectively. Results Time × group effect for CMJ height (P = 0.01, ƞp 2 = 0.25), peak force (PF) (P = 0.03, ƞp 2 = 0.22) and rate of force development (RFD) (P = 0.02, ƞp 2 = 0.22) obtained from ISqT120 were noted. A main effect for time was observed in CMJ height, PF obtained from ISqT90 and ISqT120, and RFD obtained from ISqT90 (P < 0.01, 0.27 < ƞp 2 < 0.57). There was greater improvement in TT30 (P = 0.043, d = 3.00), ISqT90 PF (P = 0.034, d = 3.12), ISqT120 PF (P = 0.003, d = 4.54) and ISqT120 RFD (P = 0.033, d = 1.36) in the SIST than the Con group. Conclusion SIST was more effective in improving strength and dynamic performance as compared to RIST, making it a viable training method to enhance dynamic performances.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLum, Danny; Barbosa, Tiago M.; Joseph, Ranald; Balasekaran, Govindasamy (2021). Effects of two isometric strength training methods on jump and sprint performances: a randomized controlled trial. Journal of Science in Sport and Exercise. ISSN 2096-6709. 5:1, p. 1-10pt_PT
dc.identifier.doi10.1007/s42978-020-00095-wpt_PT
dc.identifier.issn2096-6709
dc.identifier.urihttp://hdl.handle.net/10198/23473
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCountermovement jumppt_PT
dc.subjectIsometric squatpt_PT
dc.subjectRate of force developmentpt_PT
dc.subjectPeak forcept_PT
dc.titleEffects of two isometric strength training methods on jump and sprint performances: a randomized controlled trialpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue1pt_PT
oaire.citation.titleJournal of Science in Sport and Exercisept_PT
oaire.citation.volume5pt_PT
person.familyNameBarbosa
person.givenNameTiago M.
person.identifier.ciencia-id8B11-BDC4-F6FF
person.identifier.orcid0000-0001-7071-2116
person.identifier.scopus-author-id10044856400
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication941a6f14-cfba-458a-a2e3-0cbd1846cd42
relation.isAuthorOfPublication.latestForDiscovery941a6f14-cfba-458a-a2e3-0cbd1846cd42

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