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dc.contributor.authorKulmala, Juha-Pekka
dc.contributor.authorKorhonen, Marko T.
dc.contributor.authorRuggiero, Luca
dc.contributor.authorKuitunen, Sami
dc.contributor.authorSuominen, Harri
dc.contributor.authorHeinonen, Ari
dc.contributor.authorMikkola, Aki
dc.contributor.authorAvela, Janne
dc.date.accessioned2020-02-20T12:17:41Z
dc.date.available2020-02-20T12:17:41Z
dc.date.issued2020
dc.identifier.citationKulmala, J.-P., Korhonen, M. T., Ruggiero, L., Kuitunen, S., Suominen, H., Heinonen, A., Mikkola, A., & Avela, J. (2020). Ankle and knee extensor muscle effort during locomotion in young and older athletes : Implications for understanding age-related locomotor decline. <i>Scientific Reports</i>, <i>10</i>, Article 2801. <a href="https://doi.org/10.1038/s41598-020-59676-y" target="_blank">https://doi.org/10.1038/s41598-020-59676-y</a>
dc.identifier.otherCONVID_34677098
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/67919
dc.description.abstractAge-related reduction in muscle force generation capacity is similarly evident across different lower limb muscle groups, yet decline in locomotor performance with age has been shown to depend primarily on reduced ankle extensor muscle function. To better understand why ageing has the largest detrimental effect on ankle joint function during locomotion, we examined maximal ankle and knee extensor force development during a two-leg hopping test in older and young men, and used these forces as a reference to calculate relative operating efforts for the knee and ankle extensors as participants walked, ran and sprinted. We found that, across locomotion modes in both age groups, ankle extensors operated at a greater relative effort compared to knee extensors; however, slightly less pronounced differences between ankle and knee extensor muscle efforts were present among older men, mainly due to a reduction in the ankle extensor force generation during locomotion modes. We consider these findings as evidence that reduced ankle push-off function in older age is driven by a tendency to keep ankle extensor effort during locomotion lower than it would otherwise be, which, in turn, may be an important self-optimisation strategy to prevent locomotor-induced fatigue of ankle extensor muscles.en
dc.format.mimetypeapplication/pdf
dc.languageeng
dc.language.isoeng
dc.publisherNature Publishing Group
dc.relation.ispartofseriesScientific Reports
dc.rightsCC BY 4.0
dc.subject.othercomputational biophysics
dc.subject.othermuscle
dc.titleAnkle and knee extensor muscle effort during locomotion in young and older athletes : Implications for understanding age-related locomotor decline
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202002202145
dc.contributor.laitosLiikuntatieteellinen tiedekuntafi
dc.contributor.laitosFaculty of Sport and Health Sciencesen
dc.contributor.oppiaineGerontologia ja kansanterveysfi
dc.contributor.oppiaineBiomekaniikkafi
dc.contributor.oppiaineFysioterapiafi
dc.contributor.oppiaineGerontology and Public Healthen
dc.contributor.oppiaineBiomechanicsen
dc.contributor.oppiainePhysiotherapyen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.relation.issn2045-2322
dc.relation.volume10
dc.type.versionpublishedVersion
dc.rights.copyright© The Author(s) 2020
dc.rights.accesslevelopenAccessfi
dc.subject.ysonilkat
dc.subject.ysobiomekaniikka
dc.subject.ysopolvet
dc.subject.ysoliikuntakyky
dc.subject.ysolihakset
dc.subject.ysoikääntyminen
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p24005
jyx.subject.urihttp://www.yso.fi/onto/yso/p20292
jyx.subject.urihttp://www.yso.fi/onto/yso/p14204
jyx.subject.urihttp://www.yso.fi/onto/yso/p22622
jyx.subject.urihttp://www.yso.fi/onto/yso/p2784
jyx.subject.urihttp://www.yso.fi/onto/yso/p5056
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1038/s41598-020-59676-y
jyx.fundinginformationThis work was supported by the Academy of Finland (grants 308364 and 138574) and the Finnish Ministry of Education and Culture (grant 250683).
dc.type.okmA1


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