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dc.contributor.authorFinni Juutinen, Taija
dc.contributor.authorBernabei, Michel
dc.contributor.authorBaan, Guus C.
dc.contributor.authorNoort, Wendy
dc.contributor.authorTijs, Chris
dc.contributor.authorMaas, Huub
dc.date.accessioned2018-02-28T08:32:39Z
dc.date.available2018-11-25T22:35:29Z
dc.date.issued2018
dc.identifier.citationFinni Juutinen, T., Bernabei, M., Baan, G. C., Noort, W., Tijs, C., & Maas, H. (2018). Non-uniform displacement and strain between the soleus and gastrocnemius subtendons of rat Achilles tendon. <i>Scandinavian Journal of Medicine and Science in Sports</i>, <i>28</i>(3), 1009-1017. <a href="https://doi.org/10.1111/sms.13001" target="_blank">https://doi.org/10.1111/sms.13001</a>
dc.identifier.otherCONVID_27333334
dc.identifier.otherTUTKAID_75594
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/57207
dc.description.abstractAchilles tendon (AT) comprises of 3 subtendons arising from the soleus (SOL) and the lateral (LG) and medial (MG) heads of the gastrocnemius muscle. While recent human studies show differential displacement within AT, these displacements have not been attributed to specific subtendons. We tested the hypothesis that the SOL and LG subtendons show differential displacement and strain during various combinations of SOL, LG, and MG excitations. Movement of knots, sutured onto SOL and LG subtendons of 12 Wistar rats, was videotaped, while the muscles were stimulated intramuscularly and ankle torque was assessed. When SOL only was stimulated, the plantar flexion torque was the smallest among the different conditions (P < .001). In this condition, from passive to active state, the displacement (0.57 vs 0.47 mm, P = .002) and strain (8.4% vs 2.4%, P < .001) in the SOL subtendon were greater than in LG subtendon. When LG only was stimulated, a higher ankle torque was measured as compared to SOL stimulation (P < .001); the displacement was similar in both subtendons (~0.6 mm), while the strain was greater in LG than in SOL (4.7% vs 1.7%, P < .001). When all 3 muscles were stimulated simultaneously, ankle torque was highest and the displacement (0.79 vs 0.74 mm, P = .002) and strain (7.7% vs 4.4%, P = .003) were greater in SOL than in LG. These data show that the different subtendons of AT can experience relative displacement and differential strains. Together with anatomical dissections, the results revealed that such uniformities may be due to a lower stiffness of SOL subtendon compared to LG.
dc.language.isoeng
dc.publisherWiley-Blackwell Publishing Ltd.
dc.relation.ispartofseriesScandinavian Journal of Medicine and Science in Sports
dc.subject.otherkantajänne
dc.subject.othercalcaneal tendon
dc.titleNon-uniform displacement and strain between the soleus and gastrocnemius subtendons of rat Achilles tendon
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201802271605
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.updated2018-02-27T13:15:03Z
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.format.pagerange1009-1017
dc.relation.issn0905-7188
dc.relation.numberinseries3
dc.relation.volume28
dc.type.versionacceptedVersion
dc.rights.copyright© John Wiley & Sons A/S., 2017. This is a final draft version of an article whose final and definitive form has been published by John Wiley & Sons A/S. Published in this repository with the kind permission of the publisher.
dc.rights.accesslevelopenAccessfi
dc.subject.ysokantajänne
jyx.subject.urihttp://www.yso.fi/onto/yso/p18959
dc.relation.doi10.1111/sms.13001
dc.type.okmA1


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