<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-09-19T21:37:14Z</responseDate><request verb="GetRecord" identifier="oai:wakespace.lib.wfu.edu:10339/93897" metadataPrefix="dim">https://wakespace.lib.wfu.edu/server/oai/request</request><GetRecord><record><header><identifier>oai:null:10339/93897</identifier><datestamp>2026-09-02T11:34:43Z</datestamp><setSpec>com_10339_14934</setSpec><setSpec>col_10339_38132</setSpec></header><metadata><dim:dim xmlns:dim="http://www.dspace.org/xmlns/dspace/dim" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://www.dspace.org/xmlns/dspace/dim http://www.dspace.org/schema/dim.xsd">
   <dim:field mdschema="dc" element="contributor" qualifier="author" lang="en_US">Kelley, Mireille Elizabeth</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="accessioned">2019-05-24T08:35:24Z</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="available">2024-05-20T08:30:07Z</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="issued" lang="en_US">2019</dim:field>
   <dim:field mdschema="dc" element="identifier" qualifier="uri">https://wakespace.lib.wfu.edu/handle/10339/93897</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="abstract" lang="en_US">Over 3 million youth athletes participate in tackle football in the United States. There are numerous benefits to the health and development of adolescents that participate in sports, but there are also injury risks. In particular, there has been growing concern regarding participation in youth football due to the high concussion rate and potential long-term effects from repetitive subconcussive (i.e. impacts that occur during regular participation in football and do not result in the signs or symptoms of a concussion) and concussive impacts. Studies have provided evidence suggesting that later-life neurodegenerative disease may result from repetitive head impacts sustained over many years of participating in football. Studies have also correlated changes in brain imaging and cognitive function with exposure to subconcussive impacts over a season of play, even in the absence of a concussion. Head impact sensors used for on-field data collection have allowed researchers to better understand the biomechanics of concussive and subconcussive impacts. However, there is still a limited understanding of the factors that may increase head impact exposure (HIE) and concussion risk, especially in youth athletes. Therefore the objective of this dissertation is to evaluate HIE with respect to contextual information collected from video and physical performance testing to identify factors associated with increased HIE and concussions. The secondary aim of this dissertation is to use head impact data and neuroimaging to better understand the potential effects of HIE on the brain over multiple seasons in youth football athletes.</dim:field>
   <dim:field mdschema="dc" element="language" qualifier="iso" lang="en_US">en</dim:field>
   <dim:field mdschema="dc" element="publisher" lang="en_US">Wake Forest University</dim:field>
   <dim:field mdschema="dc" element="subject" lang="en_US" />
   <dim:field mdschema="dc" element="title" lang="en_US">Evaluation of Head Impact Exposure and Concussion Injury Mechanisms in Youth Football</dim:field>
   <dim:field mdschema="dc" element="type" lang="en_US">Dissertation</dim:field>
   <dim:field mdschema="thesis" element="contributor" qualifier="committeeChair" lang="en_US">Stitzel, Joel D</dim:field>
   <dim:field mdschema="thesis" element="contributor" qualifier="committeeMember" lang="en_US">Rowson, Steven</dim:field>
   <dim:field mdschema="thesis" element="contributor" qualifier="committeeMember" lang="en_US">Whitlow, Christopher T</dim:field>
   <dim:field mdschema="thesis" element="contributor" qualifier="committeeMember" lang="en_US">Lintner, Laura J</dim:field>
   <dim:field mdschema="thesis" element="degree" qualifier="discipline" lang="en_US">Biomedical Engineering</dim:field>
   <dim:field mdschema="thesis" element="embargo" qualifier="terms" lang="en_US">2024-05-20</dim:field>
   <dim:field mdschema="others" element="access-status">open.access</dim:field>
</dim:dim>
</metadata></record></GetRecord></OAI-PMH>