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dc.contributor.authorPeltonen, Jussien_US
dc.contributor.authorJ. Cronin, Neilen_US
dc.contributor.authorAvela, Janneen_US
dc.contributor.authorFinni, Taijaen_US
dc.date.accessioned2017-05-03T15:50:14Z
dc.date.available2017-05-03T15:50:14Z
dc.date.issued2010en_US
dc.date.modified2011-03-08T06:50:16Z
dc.identifier.issn00220949en_US
dc.identifier.doi10.1242/jeb.033514en_AU
dc.identifier.urihttp://hdl.handle.net/10072/36058
dc.description.abstractStiffness of the human Achilles tendon (AT) was determined in vivo before and after a single bout of hopping exercise. It was hypothesized, based on published data using in vitro specimens, that a reduction in AT stiffness may occur after just 1000 loading cycles at physiological stress levels. Ten healthy subjects performed two-legged hopping exercise consisting of 1150-2600 high impacts. Tendon stiffness was determined in several isometric ramp contractions [20%, 40%, 60%, 80% and 100% maximum voluntary contraction (MVC)] during which tendon elongation was measured using ultrasonography and two cameras. Tendon force was calculated by dividing measured ankle torque by magnetic resonance imaging-derived AT lever arm length. Tendon stiffness remained unchanged, being 430Ჰ0 N mm-1 before and 390ᱹ0 N mm-1 after the exercise [not significant (n.s.)]. Despite the lack of changes in stiffness, maximum tendon force during MVC was reduced from 3.5ᰮ6 kN to 2.8ᰮ7 kN (P<0.01). As the proposed decline in stiffness was not observed, it is concluded that mechanical fatigue did not take place in the AT of healthy individuals after a single bout of high-impact exercise performed until exhaustion.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherThe Company of Biologists Ltden_US
dc.publisher.placeUnited Kingdomen_US
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefrom1259en_US
dc.relation.ispartofpageto1265en_US
dc.relation.ispartofissue8en_US
dc.relation.ispartofjournalJournal of Experimental Biologyen_US
dc.relation.ispartofvolume213en_US
dc.rights.retentionYen_AU
dc.subject.fieldofresearchBiomechanicsen_US
dc.subject.fieldofresearchcode110601en_US
dc.titleIn vivo mechanical response of human Achilles tendon to a single bout of hopping exerciseen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.rights.copyrightSelf-archiving of the author-manuscript version is not yet supported by this journal. Please refer to the journal link for access to the definitive, published version or contact the author for more information.en_AU
gro.date.issued2010
gro.hasfulltextNo Full Text


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