The effects of predisposition and direction on ankle sprain risk predictive factors during jump landing

dc.contributor.advisor Jason Gillette
dc.contributor.author Radley, Caleb
dc.contributor.department Kinesiology
dc.date 2019-11-05T20:05:00.000
dc.date.accessioned 2020-06-30T03:12:40Z
dc.date.available 2020-06-30T03:12:40Z
dc.date.copyright Wed Aug 01 00:00:00 UTC 2018
dc.date.embargo 2001-01-01
dc.date.issued 2018-01-01
dc.description.abstract <p>Ankle sprains are regarded as one of the most common lower extremity injury in sports. Previous research studying ankle sprain risk factors has examined the role of anticipation on dynamic movements such as cutting and jump landing. However, no previous research has examined the role of predisposition on ankle sprain risk during jump landing. As a result, the purpose of this study was to examine the effects of jump direction and predisposition on ankle sprain risk predictive factors during jump landing. Seventeen participants participated in a jump-land-jump task in which the direction of the second jump was indicated before the task, with the possibility of the direction changing at initial landing. This produced four total conditions for the study: correct predisposed dominant (CPD), correct predisposed non-dominant, incorrect predisposed dominant (IPD), and incorrect predisposed non-dominant (IPN).</p> <p>Ground reaction forces were shown to be significantly different when predisposition was incorrect. Ankle dorsiflexion significantly decreased when predisposition went from correct to incorrect in the dominant direction. The results in this study further support previous research indicating change in direction applies higher demands on the body to perform. There appears to be a tradeoff between fully committing to a predisposed direction and increasing the risk of ankle sprain injury. Including decision making tasks for practice in dynamic sports is recommended.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/etd/16658/
dc.identifier.articleid 7665
dc.identifier.contextkey 12816938
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath etd/16658
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/30841
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/etd/16658/0-CR_Radley_Thesis_Errata_Sheet.pdf|||Fri Jan 14 21:03:52 UTC 2022
dc.source.bitstream archive/lib.dr.iastate.edu/etd/16658/Radley_iastate_0097M_17584.pdf|||Fri Jan 14 21:03:54 UTC 2022
dc.subject.disciplines Biomechanics
dc.subject.keywords ankle
dc.subject.keywords anticipation
dc.subject.keywords jumping
dc.subject.keywords landing
dc.subject.keywords predisposition
dc.subject.keywords sprain
dc.supplemental.bitstream CR_Radley_Thesis_Errata_Sheet.pdf
dc.title The effects of predisposition and direction on ankle sprain risk predictive factors during jump landing
dc.type article
dc.type.genre thesis
dspace.entity.type Publication
relation.isOrgUnitOfPublication f7b0f2ca-8e43-4084-8a10-75f62e5199dd
thesis.degree.discipline Kinesiology
thesis.degree.level thesis
thesis.degree.name Master of Science
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