Evidence map›Paper›PMID 28381107›Full record

Observational studyJournal of neurotrauma2017

Impaired Cognitive Performance in Youth Athletes Exposed to Repetitive Head Impacts.

Inga K Koerte, Elizabeth Nichols, Yorghos Tripodis, Vivian Schultz, Stefan Lehner, Randy Igbinoba, Alice Z Chuang, Michael Mayinger, Eliana M Klier, Marc Muehlmann and 7 more

Abstract readObservational Study
PubMed Full text at PMC Publisher
In one paragraph

Observational study in Journal of neurotrauma, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 4 pooled it
–field-weighted citation impact
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

42 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
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  20. Repeated Sub-Concussive Impacts and the Negative Effects of Contact Sports on Cognition and Brain Integrity.International journal of environmental research and public health · 2022
    Review
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

17 authors.

Inga K Koerte1 Department of Child and Adolescent Psychiatry, Psychosomatic, and Psychotherapy, Ludwig-Maximilians-Universität , Munich, Germany .
Elizabeth Nichols1 Department of Child and Adolescent Psychiatry, Psychosomatic, and Psychotherapy, Ludwig-Maximilians-Universität , Munich, Germany .
Yorghos Tripodis3 Department of Biostatistics, Boston University School of Public Health , Boston, Massachusetts.
Vivian Schultz1 Department of Child and Adolescent Psychiatry, Psychosomatic, and Psychotherapy, Ludwig-Maximilians-Universität , Munich, Germany .
Stefan Lehner4 Department of Applied Sciences and Mechatronics, University of Applied Sciences , Munich, Germany .
Randy Igbinoba5 Department of Neurobiology and Anatomy, McGovern Medical School, University of Texas Health Science Center , Houston, Texas.
Alice Z Chuang6 Department of Ophthalmology and Visual Science, McGovern Medical School, University of Texas Health Science Center , Houston, Texas.
Michael Mayinger1 Department of Child and Adolescent Psychiatry, Psychosomatic, and Psychotherapy, Ludwig-Maximilians-Universität , Munich, Germany .
Eliana M Klier5 Department of Neurobiology and Anatomy, McGovern Medical School, University of Texas Health Science Center , Houston, Texas.
Marc Muehlmann7 Institute for Clinical Radiology , Ludwig-Maximilians-Universität, Munich, Germany .
David Kaufmann8 Department of Radiology, Charité, Berlin, Germany .
Christian Lepage2 Psychiatry Neuroimaging Laboratory, Department of Psychiatry, Brigham and Women's Hospital , and Harvard Medical School, Boston, Massachusetts.
Florian Heinen9 Department of Pediatric Neurology, Dr. von Hauner Children's Hospital , Ludwig-Maximilians- Universität, Munich, Germany .
Gerd Schulte-Körne1 Department of Child and Adolescent Psychiatry, Psychosomatic, and Psychotherapy, Ludwig-Maximilians-Universität , Munich, Germany .
Ross Zafonte10 Spaulding Rehabilitation Hospital, Massachusetts General Hospital, Brigham and Women's Hospital , Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, Massachusetts.
Martha E Shenton2 Psychiatry Neuroimaging Laboratory, Department of Psychiatry, Brigham and Women's Hospital , and Harvard Medical School, Boston, Massachusetts.
Anne B Sereno5 Department of Neurobiology and Anatomy, McGovern Medical School, University of Texas Health Science Center , Houston, Texas.

Funding

Neuropathology CoreP30AG013846 · NIA · BOSTON UNIVERSITY MEDICAL CAMPUS · PI KOWALL, NEIL W. · 1996 to 2020
$29.1M
NIA NIH HHS P30 AG013846
6 · The paper itself

Abstract

Worldwide, more than 22 million children and adolescents are exposed to repetitive head impacts (RHI) in soccer. Evidence indicates cumulative effects on brain structure, but it is not known whether exposure to RHI affects cognitive improvement in adolescents. The aim of the study was to determine whether exposure to RHI while heading the ball in soccer affects improvement in cognitive performance in adolescents over time. The study group consisted of a convenience sample of 16 male soccer players (mean age 15.7 ± 0.7 years). A comparison cohort of 14 male non-contact sports athletes (mean age 14.9 ± 1.1 years) was recruited from competitive athletic clubs and group-matched in age. Using the ProPoint and AntiPoint tasks, sensorimotor and cognitive functions were measured over both immediate (pre- vs. post-training) as well as across multiple time points within a play season. The number and type of head impacts that occurred during the training were counted. The main outcome measure was the change in response time (RT) in the ProPoint and AntiPoint tasks. The immediate (pre- vs. post-training) and longer-term (across a play season) change in RT was analyzed, and the effect of the number and type of head impacts was tested. Thirty athletes with and without exposure to RHI demonstrated a decrease in RT in both tasks immediately after training. Over the play season, both groups showed improvement in sensorimotor function. While the control group also improved in cognitive performance, the soccer players did not, however. Further, the more long headers performed, the slower the improvement in RT over the season. Youth athletes experience an immediate cognitive improvement after training most likely because of physical exercise. Results of this study also suggest an association between exposure to specific RHI (long headers) and lack of improvement in cognitive performance in youth athletes over time.

Indexed as

AdolescentAthletesBrain ConcussionCognitive DysfunctionCohort StudiesHumansLongitudinal StudiesMaleProspective StudiesReaction TimeSoccercognitive functioncognitive improvementheadingrepetitive head impactsoccersports-related brain trauma

Identifiers

PMID28381107
PMCPMC5563858

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.