Evidence map›Paper›PMID 28387556›Full record

ReviewJournal of athletic training2017

Long-Term Cognitive and Neuropsychiatric Consequences of Repetitive Concussion and Head-Impact Exposure.

Thomas McAllister, Michael McCrea

Open access · bronzeAbstract readReview
In one paragraph

Review in Journal of athletic training, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 106 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
106citing papers in PubMed, 2 pooled it
9.5field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

106 citing papers in PubMed, 2 syntheses or guidelines pooled it, 201 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Partner-inflicted brain injury may cognitively age survivors by over a decade.medRxiv : the preprint server for health sciences · 2026
    Article
  4. Article
  5. Article
  6. Injuries caused to others by recreational surfers in Australia.Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention · 2026
    Article
  7. Article
  8. Factors associated with subjective cognitive complaints in former American football players.Journal of the International Neuropsychological Society : JINS · 2026
    Article
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  14. Review
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  20. Article

46 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 2 institutions in 1 country.

Thomas McAllisterDepartment of Psychiatry, Indiana University School of Medicine, Indianapolis.
Michael McCreaDepartment of Neurosurgery, Medical College of Wisconsin, Milwaukee.
Indiana University – Purdue University Indianapolis · USMedical College of Wisconsin · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Initially, interest in sport-related concussion arose from the premise that the study of athletes engaged in sports associated with high rates of concussion could provide insight into the mechanisms, phenomenology, and recovery from mild traumatic brain injury. Over the last decade, concerns have focused on the possibility that, for some athletes, repetitive concussions may raise the long-term risk for cognitive decline, neurobehavioral changes, and neurodegenerative disease. First conceptualized as a discrete event with variable recovery trajectories, concussion is now viewed by some as a trigger of neurobiological events that may influence neurobehavioral function over the course of the life span. Furthermore, advances in technology now permit us to gain a detailed understanding of the frequency and intensity of repetitive head impacts associated with contact sports (eg, football, ice hockey). Helmet-based sensors can be used to characterize the kinematic features of concussive impacts, as well as the profiles of typical head-impact exposures experienced by athletes in routine sport participation. Many large-magnitude impacts are not associated with diagnosed concussions, whereas many diagnosed concussions are associated with more modest impacts. Therefore, a full understanding of this topic requires attention to not only the effects of repetitive concussions but also overall exposure to repetitive head impacts. This article is a review of the current state of the science on the long-term neurocognitive and neurobehavioral effects of repetitive concussion and head-impact exposure in contact sports.

Indexed as

AthletesAthletic InjuriesAttentionBiomechanical PhenomenaBrain ConcussionCognition DisordersFemaleFootballHead Protective DevicesHockeyHumansMaleNervous System DiseasesSoccerneurodegenerationrecoverysymptom reportingtraumatic brain injuries

Identifiers

PMID28387556
PMCPMC5384827
OpenAlexW2605098941

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.