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dc.contributor.advisorHäkkinen, Keijo
dc.contributor.authorKotikangas, Johanna
dc.date.accessioned2020-01-30T11:08:39Z
dc.date.available2020-01-30T11:08:39Z
dc.date.issued2020
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/67619
dc.description.abstractThe frequency, volume, intensity and length of rest intervals affect neuromuscular fatigue caused by the resistance exercise. Acute neuromuscular responses and long-term adaptations to different types of resistance exercises have been examined in the previous studies, but they still are not entirely understood. The neuromuscular fatigue has been studied widely in untrained subjects, nevertheless, there is a lack of evidence about neuromuscular responses to resistance exercise in recreational and especially elite level athletes. The purpose of this study was to examine, whether the training background affected the acute neuromuscular responses during resistance exercise loadings or during the recovery of two days. In total 23 men participated in the study. Subjects were divided into three groups by their training background - power athletes (POA, n=8), strength athletes (SA, n=8) and nonathletes (NA, n=7). The subject groups performed power (7x6x50% of 1RM), maximal strength (7x3x90% of 1RM) and hypertrophic (5x10x70% of 1RM) loadings separated by one week. The neuromuscular measurements were performed before, during and immediately after the loading and after 15 minutes, 24 hours and 48 hours of recovery. The measurements included maximal isometric force and average force during the first 500 ms of contraction in the leg press, average power during the half back-squat, countermovement jump height, maximal isometric force of knee extensors, electrical stimulation of QF during the maximal isometric voluntary contraction, sEMG from VL and VM, and blood lactate. It was shown that all resistance exercise loadings led to an acute decrease in neuromuscular performance. For instance, MIVCLP decreased from Pre to Post -7.6 to -13.4% during the power loading, -13.4 to -15.6% during the maximal strength loading and -24.5 to -29.9% during the hypertrophic loading. sEMG measured during in MIVCLP declined from Pre to Post -10.1 to -12.9%, -12.6 to -20.3% and -5.3 to 9.7% respectively. During the power loading, significant differences were observed from Pre to Mid (p=0.044) between POA (-12.5%) and SA (-5.6%) in MIVCLP and from Pre to Mid (p=0.024) between SA (-4.1%) and NA (-11.4%) in CMJheight. The recovery within the groups was similar after all resistance exercise loadings and no significant differences between groups were found during the recovery. In conclusion, this study indicated that the neuromuscular fatigue caused by both the power and maximal strength loadings was mainly of central origins, whereas the hypertrophic loading caused more peripheral neuromuscular fatigue. The significant differences observed between groups during the power loading could suggest that the training background may affect the acute responses after this type of resistance exercise loading. The training background seemed to have a limited effect on the recovery after the present types of resistance exercise loadings.en
dc.format.extent87
dc.language.isoen
dc.subject.otherresistance loading
dc.subject.otherneuromuscular fatigue
dc.subject.othertraining background
dc.titleAcute neuromuscular responses and recovery after three different resistance exercise loadings in male power and strength athletes
dc.identifier.urnURN:NBN:fi:jyu-202001301888
dc.type.ontasotMaster’s thesisen
dc.type.ontasotPro gradu -tutkielmafi
dc.contributor.tiedekuntaLiikuntatieteellinen tiedekuntafi
dc.contributor.tiedekuntaFaculty of Sport and Health Sciencesen
dc.contributor.laitosLiikunta- ja terveystieteetfi
dc.contributor.laitosSport and Health Sciencesen
dc.contributor.yliopistoJyväskylän yliopistofi
dc.contributor.yliopistoUniversity of Jyväskyläen
dc.contributor.oppiaineValmennus- ja testausoppifi
dc.contributor.oppiaineScience in Sport Coaching and Fitness Testingen
dc.rights.copyrightJulkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty.fi
dc.rights.copyrightThis publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited.en
dc.contributor.oppiainekoodi5013
dc.subject.ysovoimaharjoittelu
dc.subject.ysourheilijat
dc.subject.ysopalautuminen
dc.subject.ysoväsymys
dc.subject.ysostrength training
dc.subject.ysoathletes
dc.subject.ysorecovery (return)
dc.subject.ysofatigue (biological phenomena)
dc.rights.accessrightsTekijä ei ole antanut lupaa avoimeen julkaisuun, joten aineisto on luettavissa vain Jyväskylän yliopiston kirjaston arkistotyösemalta. Ks. https://kirjasto.jyu.fi/fi/tyoskentelytilat/laitteet-ja-tilat..fi
dc.rights.accessrightsThe author has not given permission to make the work publicly available electronically. Therefore the material can be read only at the archival workstation at Jyväskylä University Library (https://kirjasto.jyu.fi/en/workspaces/facilities).en


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