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dc.contributor.authorWerkhausen, Amelie
dc.contributor.authorCronin, Neil
dc.contributor.authorAlbracht, Kirsten
dc.contributor.authorBojsen-Møller, Jens
dc.contributor.authorSeynnes, Olivier R.
dc.date.accessioned2019-07-17T05:15:05Z
dc.date.available2020-07-15T21:35:08Z
dc.date.issued2019
dc.identifier.citationWerkhausen, A., Cronin, N., Albracht, K., Bojsen-Møller, J., & Seynnes, O. R. (2019). Distinct muscle-tendon interaction during running at different speeds and in different loading conditions. <i>Journal of Applied Physiology</i>, <i>127</i>(1), 246-253. <a href="https://doi.org/10.1152/japplphysiol.00710.2018" target="_blank">https://doi.org/10.1152/japplphysiol.00710.2018</a>
dc.identifier.otherCONVID_30671220
dc.identifier.otherTUTKAID_81420
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/65072
dc.description.abstractThe interaction between the Achilles tendon and the triceps surae muscles seems to be modulated differently with various task configurations. Here we tested the hypothesis that the increased forces and ankle joint work during running under contrasting conditions (altered speed or load) would be met by different, time-dependent adjustments at the muscle-tendon level. Ultrasonography, electromyography, kinematics, and ground reaction force measurements were used to examine Achilles tendon, gastrocnemius, and soleus muscle mechanics in 16 runners in four different running conditions, consisting of a combination of two different speeds (preferred and +20% of preferred speed) and two loading conditions (unloaded and +20% of body mass). Positive ankle joint work increased similarly (+13%) with speed and load. Gastrocnemius and soleus muscle fascicle length and peak velocity were not altered by either condition, suggesting that contractile conditions are mostly preserved despite the constraints imposed in this experimental design. However, at higher running speed, tendon length changes were unaltered but mean muscle electromyographic activity increased in gastrocnemius (+10%, P < 0.01) and soleus (+14%, P < 0.01). Conversely, when loading was increased, mean muscle activity remained similar to unloaded conditions but the mean velocity of gastrocnemius fascicles was reduced and tendon recoil increased (+29%, P < 0.01). Collectively, these results suggest that the neuromuscular system meets increased mechanical demands by favoring economical force production when enough time is available.fi
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherAmerican Physiological Society
dc.relation.ispartofseriesJournal of Applied Physiology
dc.rightsIn Copyright
dc.subject.otherachilles tendon
dc.subject.otherload carriage
dc.subject.otherlocomotion
dc.subject.othermuscle architecture
dc.titleDistinct muscle-tendon interaction during running at different speeds and in different loading conditions
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201907163637
dc.contributor.laitosLiikuntatieteellinen tiedekuntafi
dc.contributor.laitosFaculty of Sport and Health Sciencesen
dc.contributor.oppiaineBiomekaniikkafi
dc.contributor.oppiaineBiomechanicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2019-07-16T12:15:13Z
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.format.pagerange246-253
dc.relation.issn8750-7587
dc.relation.numberinseries1
dc.relation.volume127
dc.type.versionacceptedVersion
dc.rights.copyright© 2019 the American Physiological Society
dc.rights.accesslevelopenAccessfi
dc.subject.ysojuoksu
dc.subject.ysobiomekaniikka
dc.subject.ysokantajänne
dc.subject.ysolihakset
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p9087
jyx.subject.urihttp://www.yso.fi/onto/yso/p20292
jyx.subject.urihttp://www.yso.fi/onto/yso/p18959
jyx.subject.urihttp://www.yso.fi/onto/yso/p2784
dc.rights.urlhttp://rightsstatements.org/page/InC/1.0/?language=en
dc.relation.doi10.1152/japplphysiol.00710.2018
dc.type.okmA1


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