Cumulative Effects Associated With Recurrent Concussion in Collegiate Football Players: The NCAA Concussion Study
Kevin M. Guskiewicz,Michael McCrea,Michael McCrea,Stephen W. Marshall,Robert C. Cantu,Robert C. Cantu,Christopher Randolph,Christopher Randolph,William B. Barr,James A. Onate,James P. Kelly,James P. Kelly +11 more
TLDR
This study suggests thatPlayers with a history of previous concussions are more likely to have future concussive injuries than those with no history; 1 in 15 players with a concussion may have additional concussions in the same playing season; and previous concussion may be associated with slower recovery of neurological function.Abstract:
ContextApproximately 300 000 sport-related concussions occur annually
in the United States, and the likelihood of serious sequelae may increase
with repeated head injury.ObjectiveTo estimate the incidence of concussion and time to recovery after concussion
in collegiate football players.Design, Setting, and ParticipantsProspective cohort study of 2905 football players from 25 US colleges
were tested at preseason baseline in 1999, 2000, and 2001 on a variety of
measures and followed up prospectively to ascertain concussion occurrence.
Players injured with a concussion were monitored until their concussion symptoms
resolved and were followed up for repeat concussions until completion of their
collegiate football career or until the end of the 2001 football season.Main Outcome MeasuresIncidence of concussion and repeat concusion; type and duration of symptoms
and course of recovery among players who were injured with a concussion during
the seasons.ResultsDuring follow-up of 4251 player-seasons, 184 players (6.3%) had a concussion,
and 12 (6.5%) of these players had a repeat concussion within the same season.
There was an association between reported number of previous concussions and
likelihood of incident concussion. Players reporting a history of 3 or more
previous concussions were 3.0 (95% confidence interval, 1.6-5.6) times more
likely to have an incident concussion than players with no concussion history.
Headache was the most commonly reported symptom at the time of injury (85.2%),
and mean overall symptom duration was 82 hours. Slowed recovery was associated
with a history of multiple previous concussions (30.0% of those with ≥3
previous concussions had symptoms lasting >1 week compared with 14.6% of those
with 1 previous concussion). Of the 12 incident within-season repeat concussions,
11 (91.7%) occurred within 10 days of the first injury, and 9 (75.0%) occurred
within 7 days of the first injury.ConclusionsOur study suggests that players with a history of previous concussions
are more likely to have future concussive injuries than those with no history;
1 in 15 players with a concussion may have additional concussions in the same
playing season; and previous concussions may be associated with slower recovery
of neurological function.read more
Citations
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Sport experience is correlated with complex motor skill recovery in youth following concussion.
TL;DR: An important role of eye–limb coordination-related sport experience in functional CMI recovery post-concussion is pointed towards, as youth with a concussion history but greater sport experience may have more skill-related motor “reserve”.
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A comparison in a youth population between those with and without a history of concussion using biomechanical reconstruction
Andrew Post,Andrew Post,T. Blaine Hoshizaki,Michael D. Gilchrist,David Koncan,Lauren Dawson,Wesley Chen,Andrée-Anne Ledoux,Roger Zemek +8 more
TL;DR: There is no measureable biomechanical vulnerability to head impact related to a history of concussions in this youth population, suggesting a reflection of the long time between the previous concussion and the one reconstructed in the laboratory, where such a long period has been associated with recovery from injury.
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Effects of the New York State Concussion Management and Awareness Act (“Lystedt Law”) on Concussion-Related Emergency Health Care Utilization Among Adolescents, 2005-2015:
TL;DR: The period of greatest increases in EDCHVs and decreases in brain imaging utilization for SRCs preceded New York concussion legislation by several years, suggesting a minimal direct effect on emergency care–seeking behavior for concussions.
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Comparing the characteristics of snowboarders injured in a terrain park who present to the ski patrol, the emergency department or both.
Kelly Russell,Willem H. Meeuwisse,Alberto Nettel-Aguirre,Carolyn A. Emery,Jillian Wishart,Nicole T. R. Romanow,Brian H. Rowe,Claude Goulet,Brent E Hagel +8 more
TL;DR: Snowboarders who present to the emergency department only had similar injuries as those who presented to both, but concussions and lower extremity injuries were significantly more likely to present to ski patrol only versus ski patrol and ED.
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Concussion management knowledge among residents and students and how to improve it.
Mohammad N Haider,John J. Leddy,John G. Baker,John Kiel,Michael Tiso,Karl A Ziermann,Barry Willer +6 more
TL;DR: PM and FM residents can benefit from more focused education about concussion, and intervention group rotated in a clinic and knowledge increase for control group was 1.16% compared with 14.41% for the clinical rotation group.
References
More filters
Journal ArticleDOI
Longitudinal data analysis using generalized linear models
Kung Yee Liang,Scott L. Zeger +1 more
TL;DR: In this article, an extension of generalized linear models to the analysis of longitudinal data is proposed, which gives consistent estimates of the regression parameters and of their variance under mild assumptions about the time dependence.
Journal ArticleDOI
Longitudinal data analysis for discrete and continuous outcomes.
Scott L. Zeger,Kung-Yee Liang +1 more
TL;DR: A class of generalized estimating equations (GEEs) for the regression parameters is proposed, extensions of those used in quasi-likelihood methods which have solutions which are consistent and asymptotically Gaussian even when the time dependence is misspecified as the authors often expect.
Book
Generalized, Linear, and Mixed Models
TL;DR: In this paper, the authors present a model for estimating the effect of random effects on a set of variables in a linear mixed model with the objective of finding the probability of a given variable having a given effect.
Journal ArticleDOI
Acute Effects and Recovery Time Following Concussion in Collegiate Football Players: The NCAA Concussion Study
Michael McCrea,Kevin M. Guskiewicz,Stephen W. Marshall,William B. Barr,Christopher Randolph,Christopher Randolph,Robert C. Cantu,Robert C. Cantu,James A. Onate,Jingzhen Yang,James P. Kelly +10 more
TL;DR: In this paper, a study of 1631 football players from 15 US colleges found that players with concussions exhibited more severe symptoms (mean GSC score 20.93 [95% confidence interval {CI, 15.65-26.21] points higher than that of controls), cognitive impairments (mean SAC score 2.94 [ 95% CI, 1.41 to 2.06], cognitive functioning improved to baseline levels within 5 to 7 days (day 7 SAC mean difference, −0.33;
Journal Article
The Neurometabolic Cascade of Concussion
TL;DR: Improved guidelines for clinical management of concussion may be formulated as the functional significance and duration of these postinjury neurometabolic derangements are better delineated.
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