Near point of convergence in high school athletes

Author(s)Sellars, William E.
Date Accessioned2018-09-27T11:16:03Z
Date Available2018-09-27T11:16:03Z
Publication Date2018
SWORD Update2018-07-23T22:13:49Z
AbstractContext: Awareness of sport-related concussions (SRC) has increased significantly in recent years. The clinical diagnosis of SRC is typically performed with tools assessing postural stability, cognitive function, neurocognitive, vestibular, and ocular motor deficits. Recent evidence has indicated convergence dysfunction to be a complication following SRC. Near point of convergence (NPC) has been reported to be a useful assessment of convergence deficits following SRC. No investigation on differences in NPC values between different instrument methods has been performed. Objective: The primary purpose of this study was to determine if instrument method (tongue depressor or accommodative ruler) influences NPC values in high school athletes. The secondary purpose was to assess whether a difference exists in NPC values between contact and limited or non-contact sport type athletes. Design: Quasi-experimental, ex post facto. Setting: High School. Patients or Other Participants: 201 high school student-athletes (age = 15.7±1.2 yrs, height = 170.5±10.0 cm, mass = 69.9±16.2 kg) from 14 sports were assessed for NPC values. Main Outcome Measures: Near point of convergence values with tongue depressor (NPC-TD) and accommodative ruler (NPCAR) instrumentation. Results: There was a significant difference between NPC-TD (2.0±2.8cm) and NPC-AR (2.8±2.7cm) values, t(200)=5.85, p<0.001. There was a significant difference between contact and limited/non-contact groups with NPC-TD, t(199)=4.01, p<0.001, and NPC-AR, t(199)=2.71, p=0.004. Conclusions: Instrumentation and procedures affect NPC values in a high school student-athlete population. These data indicate the importance of consistent collection methods when utilizing NPC to assess convergence deficits following SRC.en_US
AdvisorKaminski, Thomas W.
DegreeM.S.
DepartmentUniversity of Delaware, Department of Kinesiology and Applied Physiology
Unique Identifier1054403048
URLhttp://udspace.udel.edu/handle/19716/23828
Languageen
PublisherUniversity of Delawareen_US
URIhttps://search.proquest.com/docview/2085990330?accountid=10457
KeywordsHealth and environmental sciencesen_US
KeywordsConcussionen_US
KeywordsConvergenceen_US
KeywordsNPCen_US
TitleNear point of convergence in high school athletesen_US
TypeThesisen_US
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