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Weightlifting vs Plyometrics: Effects on power development and transferability to multidirectional movement in youth male soccer players – a pilot study
Linnaeus University, Faculty of Social Sciences, Department of Sport Science.
2016 (English)Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Background Soccer is an intermittent sport where explosive movement in the frontal and transversal plane are a prominent feature. Purpose The aim of this pilot study was to compare the effects of plyometrics and weightlifting on the aforementioned qualities.Method A total of 25 male academy players (18 ± 0,7 years old) volunteered and were randomized into a weightlifting group (WL, n=12) and a plyometrics group (PG, n=13). Both groups completed 6-weeks of power training. Two performance tests were designed to evaluate power in frontal plane and change of direction ability respectively. The pre and post-results were analyzed for intra-group and inter-group variance. The level of significance was set at p=0.05.Results A total of 16 (WG n=11, PG n=5) players completed the post-tests which showed that both groups improved their lateral jumping significantly (weightlifting p=0.01, plyometrics p=0.038) however there was no significant variance between groups. None of the groups improved their ability to perform the modified t-test.Conclusions Derived from the limited data is the observation that both methods were effective in improving lateral power production but not change of direction movement.

Abstract [sv]

Bakgrund Fotboll är en intermittent idrott där explosiva rörelser i frontal och transversalplan utförs med hög frekvens.SyfteSyftet med föreliggande studie var att jämföra effekterna av plyometrik och tyngdlyftning på nämnda moment inom sporten.Metod 25 manliga fotbollsspelare (18±0.7 år gamla) anmälde sig frivilligt till studien och randomiserades i en tyngdlyftningsgrupp (WG, n=12) och en plyometrikgrupp (PG, n=13). Grupperna genomförde 6 veckor av effektträning där två prestationstest genomfördes före och efter interventionen. Testerna avsåg att kraftproduktion i lateral riktning respektive förmåga att utföra riktningsförändringar. Resultaten analyserades för inom-grupp och mellan-grupp varians. Signifikansnivå sattes till p=0.05. Resultat Totalt 16 spelare fullförde studien (WG=11, PG=5) Resultatet visade signifikant förbättring hos båda grupperna gällande lateral hoppförmåga (tyngdlyftning p=0.01, plyometrik p=0.038). Ingen signifikant skillnad kunde urskiljas mellan grupperna. Ingen av grupperna förbättrade sin förmåga att utföra riktningsförändringar.Konklusion Från den begränsade datan kan det, i föreliggande studie, observeras att båda metoderna var effektiva i att förbättra lateral kraftproduktion men inte gällande förmågan att utföra riktningsförändringar.

Place, publisher, year, edition, pages
2016. , 24 p.
Keyword [en]
change of direction, modified t-test, lateral jump, stretch-shortening cycle
Keyword [sv]
lateralt hopp, modifierat t-test, riktningsförändringar, stretch-shortening cykeln
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:lnu:diva-52797OAI: oai:DiVA.org:lnu-52797DiVA: diva2:932000
Subject / course
Sports Medicine
Supervisors
Examiners
Available from: 2016-05-31 Created: 2016-05-31 Last updated: 2016-05-31Bibliographically approved

Open Access in DiVA

sammanfattning(177 kB)14 downloads
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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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