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J Athl Train. 2001 Sep;36(3):303-306.

Multiple Concussions and Neuropsychological Functioning in Collegiate Football Players.

Author information

1
Shepherd Center and Emory University, Atlanta, GA.

Abstract

OBJECTIVE:

To document neurocognitive and neurobehavioral consequences of 1 versus 2 concussions.

DESIGN AND SETTING:

Nonequivalent, pretest-posttest cohort design with multiple dependent measures. Participants were selected from a large sample of athletes who participated in a comprehensive, multiuniversity study of football-related concussion.

SUBJECTS:

College football players who sustained 1 and 2 grade 1 concussive injuries were matched for age, education, and duration of competitive football.

MEASUREMENTS:

Neuropsychological tests and symptoms checklists.

RESULTS:

Multivariate analysis of variance did not show a statistically significant difference in test performance between players with 1 or 2 concussions. Chi square analyses revealed that concussions significantly increased the number of symptom complaints, but symptoms returned to baseline by 10 days postinjury. The effects of 2 injuries did not appear to be significantly greater than that of a single injury. Differences in response to concussion were observed.

CONCLUSIONS:

Neurocognitive and neurobehavioral consequences of 2 concussions did not appear to be significantly different from those of 1 concussion, but methodologic issues place limitations on data interpretation. Additional studies are needed to clarify the neuropsychological consequences of multiple concussions.

PMID:
12937500
PMCID:
PMC155422

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