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dc.contributor.authorLahti, Johan
dc.contributor.authorHuuhka, Toni
dc.contributor.authorRomero, Valentin
dc.contributor.authorBezodis, Ian
dc.contributor.authorMorin, Jean-Benoit
dc.contributor.authorHäkkinen, Keijo
dc.date.accessioned2020-12-18T11:49:15Z
dc.date.available2020-12-18T11:49:15Z
dc.date.issued2020
dc.identifier.citationLahti, J., Huuhka, T., Romero, V., Bezodis, I., Morin, J.-B., & Häkkinen, K. (2020). Changes in sprint performance and sagittal plane kinematics after heavy resisted sprint training in professional soccer players. <i>PeerJ</i>, <i>8</i>, Article e10507. <a href="https://doi.org/10.7717/peerj.10507" target="_blank">https://doi.org/10.7717/peerj.10507</a>
dc.identifier.otherCONVID_47419452
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/73350
dc.description.abstractBackground Sprint performance is an essential skill to target within soccer, which can be likely achieved with a variety of methods, including different on-field training options. One such method could be heavy resisted sprint training. However, the effects of such overload on sprint performance and the related kinetic changes are unknown in a professional setting. Another unknown factor is whether violating kinematic specificity via heavy resistance will lead to changes in unloaded sprinting kinematics. We investigated whether heavy resisted sled training (HS) affects sprint performance, kinetics, sagittal plane kinematics, and spatiotemporal parameters in professional male soccer players. Methods After familiarization, a nine-week training protocol and a two-week taper was completed with sprint performance and force-velocity (FV) profiles compared before and after. Out of the two recruited homogenous soccer teams (N = 32, age: 24.1 ± 5.1 years: height: 180 ± 10 cm; body-mass: 76.7 ± 7.7 kg, 30-m split-time: 4.63 ± 0.13 s), one was used as a control group continuing training as normal with no systematic acceleration training (CON, N = 13), while the intervention team was matched into two HS subgroups based on their sprint performance. Subgroup one trained with a resistance that induced a 60% velocity decrement from maximal velocity (N = 10, HS60%) and subgroup two used a 50% velocity decrement resistance (N = 9, HS50%) based on individual load-velocity profiles. Results Both heavy resistance subgroups improved significantly all 10–30-m split times (p < 0.05, d = − 1.25; −0.62). Post-hoc analysis showed that HS50% improved significantly more compared to CON in 0–10-m split-time (d = 1.03) and peak power (d = 1.16). Initial maximal theoretical horizontal force capacity (F0) and sprint FV-sprint profile properties showed a significant moderate relationship with F0 adaptation potential (p < 0.05). No significant differences in sprinting kinematics or spatiotemporal variables were observed that remained under the between-session minimal detectable change. Conclusion With appropriate coaching, heavy resisted sprint training could be one pragmatic option to assist improvements in sprint performance without adverse changes in sprinting kinematics in professional soccer players. Assessing each player’s initial individual sprint FV-profile may assist in predicting adaptation potential. More studies are needed that compare heavy resisted sprinting in randomized conditions.en
dc.format.mimetypeapplication/pdf
dc.languageeng
dc.language.isoeng
dc.publisherPeerJ
dc.relation.ispartofseriesPeerJ
dc.rightsCC BY 4.0
dc.subject.otherstrength training
dc.subject.otherresistance training
dc.subject.othersprinting
dc.subject.othervelocity-based training
dc.subject.othercoordination
dc.subject.otherprofessional sport
dc.titleChanges in sprint performance and sagittal plane kinematics after heavy resisted sprint training in professional soccer players
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202012187296
dc.contributor.laitosLiikuntatieteellinen tiedekuntafi
dc.contributor.laitosFaculty of Sport and Health Sciencesen
dc.contributor.oppiaineValmennus- ja testausoppifi
dc.contributor.oppiaineScience of Sport Coaching and Fitness Testingen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.relation.issn2167-8359
dc.relation.volume8
dc.type.versionpublishedVersion
dc.rights.copyright© 2020 Lahti et al.
dc.rights.accesslevelopenAccessfi
dc.subject.ysoharjoitusvaste
dc.subject.ysokoordinaatio (motoriikka)
dc.subject.ysobiomekaniikka
dc.subject.ysojalkapalloilijat
dc.subject.ysopikajuoksu
dc.subject.ysonopeusvoima
dc.subject.ysovoimaharjoittelu
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p24755
jyx.subject.urihttp://www.yso.fi/onto/yso/p38088
jyx.subject.urihttp://www.yso.fi/onto/yso/p20292
jyx.subject.urihttp://www.yso.fi/onto/yso/p15717
jyx.subject.urihttp://www.yso.fi/onto/yso/p9085
jyx.subject.urihttp://www.yso.fi/onto/yso/p25079
jyx.subject.urihttp://www.yso.fi/onto/yso/p16233
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.7717/peerj.10507
jyx.fundinginformationThe authors received no funding for this work.
dc.type.okmA1


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