Altered leg muscle activity in volleyball players with functional ankle instability during a sideward lateral cutting movement

dc.contributorSistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSP
dc.contributor.authorSUDA, Eneida Y.
dc.contributor.authorSACCO, Isabel C.
dc.date.accessioned2017-11-27T16:26:43Z
dc.date.available2017-11-27T16:26:43Z
dc.date.issued2011
dc.description.abstractObjectives: To study the activation patterns of tibialis anterior, peroneus longus and gastrocnemius lateralis muscles during a lateral shuffle maneuver in volleyball players with functional instability of the ankle joint. Design: Observational case-control study. Setting: Research laboratory. Participants: Sixteen players with functional instability and 18 matched controls. Main outcome measures: RMS values of tibialis anterior, peroneus longus and gastrocnemius lateralis muscles for the 50 ms before initial ground contact, timing of onset of muscle activity and linear envelopes for the period of ground contact were calculated. Results: Onset values showed similar patterns of activation for both groups. In healthy subjects, gastrocnemius lateralis activated earlier, followed by peroneus longus and tibialis anterior. In the unstable subjects, gastrocnemius lateralis and peroneus longus activated at the same time, followed by tibialis anterior. Unstable subjects also presented lower peroneus longus activity during the 50 ms before initial ground impact, a lower peroneus longus peak magnitude and a higher gastrocnemius lateralis peak magnitude. Conclusions: Volleyball players with ankle functional instability showed decreased peroneus longus activity before ground impact that may predispose them to repetitive sprains and explain their ""giving way"" sensation, since peroneus longus is the main ankle evertor and an important stabilizer against sudden and excessive inversion.
dc.description.indexMEDLINE
dc.identifier.citationPHYSICAL THERAPY IN SPORT, v.12, n.4, p.164-170, 2011
dc.identifier.doi10.1016/j.ptsp.2011.01.003
dc.identifier.issn1466-853X
dc.identifier.urihttps://observatorio.fm.usp.br/handle/OPI/22986
dc.language.isoeng
dc.publisherCHURCHILL LIVINGSTONE
dc.relation.ispartofPhysical Therapy in Sport
dc.rightsrestrictedAccess
dc.rights.holderCopyright CHURCHILL LIVINGSTONE
dc.subjectAnkle
dc.subjectJoint instability
dc.subjectElectromyography
dc.subjectSports
dc.subject.otherground reaction force
dc.subject.otherneuromuscular control
dc.subject.otherdeficits
dc.subject.otherjoint
dc.subject.othersprains
dc.subject.otherjump
dc.subject.otherelectromyography
dc.subject.otherrecommendations
dc.subject.otherepidemiology
dc.subject.otherkinematics
dc.subject.wosRehabilitation
dc.subject.wosSport Sciences
dc.titleAltered leg muscle activity in volleyball players with functional ankle instability during a sideward lateral cutting movement
dc.typearticle
dc.type.categoryoriginal article
dc.type.versionpublishedVersion
dspace.entity.typePublication
hcfmusp.author.externalSUDA, Eneida Y.:Univ Sao Paulo, Lab Biomech Human Movement & Posture, Phys Therapy Speech & Occupat Therapy Dept, Sch Med, BR-05360160 Sao Paulo, Brazil
hcfmusp.citation.scopus22
hcfmusp.contributor.author-fmusphcISABEL DE CAMARGO NEVES SACCO
hcfmusp.description.beginpage164
hcfmusp.description.endpage170
hcfmusp.description.issue4
hcfmusp.description.volume12
hcfmusp.origemWOS
hcfmusp.origem.pubmed22085709
hcfmusp.origem.scopus2-s2.0-81155128692
hcfmusp.origem.wosWOS:000298201500003
hcfmusp.publisher.cityEDINBURGH
hcfmusp.publisher.countrySCOTLAND
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