Effect of Concussion on Reaction Time and Neurocognitive Factors: Implications for Subsequent Lower Extremity Injury.

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dc.contributor.author

Ray, Tyler

dc.contributor.author

Fleming, Daniel

dc.contributor.author

Le, Daniel

dc.contributor.author

Faherty, Mallory

dc.contributor.author

Killelea, Carolyn

dc.contributor.author

Bytomski, Jeffrey

dc.contributor.author

Ray, Tracy

dc.contributor.author

Lemak, Larry

dc.contributor.author

Martinez, Corina

dc.contributor.author

Bergeron, Michael F

dc.contributor.author

Sell, Timothy

dc.date.accessioned

2022-10-01T13:53:51Z

dc.date.available

2022-10-01T13:53:51Z

dc.date.issued

2022-01

dc.date.updated

2022-10-01T13:53:51Z

dc.description.abstract

Background

Recent evidence has demonstrated that athletes are at greater risk for a lower extremity injury following a return-to-sport (RTS) after sport-related concussion (SRC). The reason for this is not completely clear, but it has been hypothesized that persistent deficits in neurocognitive factors may be a contributing factor.

Hypothesis/purpose

This study assessed simple reaction time, processing speed, attention, and concentration in a group of athletes, post-concussion upon clearance for RTS for potential deficits that may result in slower reaction time, processing speed, attention, and concentration. The researchers hypothesized that the concussion group would demonstrate worse scores on both assessments compared to a sex-, age-, and sport-matched cohort.

Study design

Case-controlled study.

Methods

Twelve participants who had suffered a SRC and eight healthy individuals who were matched to the concussed group by age, sex, and sport were evaluated. Those with a concussion had been cleared for RTS by a licensed healthcare provider. Each participant underwent neurocognitive tests that included a simple reaction time test (SRT) and the King-Devick Test (K-D). Independent t-tests were performed to compare the groups with significance set a priori at p<0.05.

Results

There was a significant difference (p =0.024) between groups for SRT with the concussed group demonstrating a better SRT than the control group. There were no significant differences (p =0.939) between the groups for the K-D.

Conclusion

With no significant differences between groups in the K-D assessment and, surprisingly, the concussed group having a better SRT compared to the healthy group, our hypothesis was not supported.

Clinical relevance

These specific measures, compounded with extensive post-concussion time lapse until RTS clearance, may have limited capacity in revealing potential persistent deficits in relevant neurocognitive characteristics.

Level of evidence

Level of Evidence 3.
dc.identifier

36648

dc.identifier.issn

2159-2896

dc.identifier.issn

2159-2896

dc.identifier.uri

https://hdl.handle.net/10161/25934

dc.language

eng

dc.publisher

International Journal of Sports Physical Therapy

dc.relation.ispartof

International journal of sports physical therapy

dc.relation.isversionof

10.26603/001c.36648

dc.subject

athletic injuries

dc.subject

injury prevention

dc.subject

postural balance

dc.subject

sport injuries

dc.title

Effect of Concussion on Reaction Time and Neurocognitive Factors: Implications for Subsequent Lower Extremity Injury.

dc.type

Journal article

pubs.begin-page

816

pubs.end-page

822

pubs.issue

5

pubs.organisational-group

Duke

pubs.organisational-group

School of Medicine

pubs.organisational-group

Clinical Science Departments

pubs.organisational-group

Family Medicine and Community Health

pubs.organisational-group

Family Medicine and Community Health, Family Medicine

pubs.publication-status

Published

pubs.volume

17

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