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dc.contributor.authorCronin, Neil J
dc.contributor.authorCarty, Christopher P
dc.contributor.authorBarrett, Rod S
dc.date.accessioned2018-01-12T00:35:07Z
dc.date.available2018-01-12T00:35:07Z
dc.date.issued2011
dc.date.modified2011-10-07T04:29:47Z
dc.identifier.issn1932-6203
dc.identifier.doi10.1371/journal.pone.0023917
dc.identifier.urihttp://hdl.handle.net/10072/41206
dc.description.abstractDuring human running, short latency stretch reflexes (SLRs) are elicited in the triceps surae muscles, but the function of these responses is still a matter of controversy. As the SLR is primarily mediated by Ia afferent nerve fibres, various methods have been used to examine SLR function by selectively blocking the Ia pathway in seated, standing and walking paradigms, but stretch reflex function has not been examined in detail during running. The purpose of this study was to examine triceps surae SLR function at different running speeds using Achilles tendon vibration to modify SLR size. Ten healthy participants ran on an instrumented treadmill at speeds between 7 and 15 km/h under 2 Achilles tendon vibration conditions: no vibration and 90 Hz vibration. Surface EMG from the triceps surae and tibialis anterior muscles, and 3D lower limb kinematics and ground reaction forces were simultaneously collected. In response to vibration, the SLR was depressed in the triceps surae muscles at all speeds. This coincided with short-lasting yielding at the ankle joint at speeds between 7 and 12 km/h, suggesting that the SLR contributes to muscle stiffness regulation by minimising ankle yielding during the early contact phase of running. Furthermore, at the fastest speed of 15 km/h, the SLR was still depressed by vibration in all muscles but yielding was no longer evident. This finding suggests that the SLR has greater functional importance at slow to intermediate running speeds than at faster speeds.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherPublic Library of Science
dc.publisher.placeUnited States
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrome23917-1
dc.relation.ispartofpagetoe23917-6
dc.relation.ispartofissue8
dc.relation.ispartofjournalPloS One
dc.relation.ispartofvolume6
dc.rights.retentionY
dc.subject.fieldofresearchBiomechanics
dc.subject.fieldofresearchcode420701
dc.titleTriceps Surae Short Latency Stretch Reflexes Contribute to Ankle Stiffness Regulation during Human Running
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttps://creativecommons.org/licenses/by/4.0/
dc.description.versionVersion of Record (VoR)
gro.facultyGriffith Health, School of Allied Health Sciences
gro.rights.copyright© 2011 Cronin et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
gro.date.issued2011
gro.hasfulltextFull Text
gro.griffith.authorBarrett, Rod
gro.griffith.authorCarty, Chris P.


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