Evidence map›Paper›PMID 31075762›Full record

ArticleJournal of neurosurgery. Pediatrics2019

Evaluation of head impact exposure measured from youth football game plays.

Jillian E Urban, William C Flood, Barret J Zimmerman, Mireille E Kelley, Mark A Espeland, Liam McNamara, Elizabeth M Davenport, Alexander K Powers, Christopher T Whitlow, Joseph A Maldjian and 1 more

Abstract read
In one paragraph

Article in Journal of neurosurgery. Pediatrics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 2 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

16 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
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  11. On-Field Deployment and Validation for Wearable Devices.Annals of biomedical engineering · 2022
    Review
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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

11 authors.

Jillian E Urban1Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Winston-Salem.
William C Flood3Radiology (Neuroradiology).
Barret J Zimmerman4Wake Forest School of Medicine, Winston-Salem, North Carolina; and.
Mireille E Kelley1Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Winston-Salem.
Mark A Espeland5Biostatistical Sciences, and.
Liam McNamara1Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Winston-Salem.
Elizabeth M Davenport6Department of Radiology, University of Texas Southwestern, Dallas, Texas.
Alexander K Powers7Neurosurgery, and.
Christopher T Whitlow3Radiology (Neuroradiology).
Joseph A Maldjian6Department of Radiology, University of Texas Southwestern, Dallas, Texas.
Joel D Stitzel1Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Winston-Salem.

Funding

Wake Forest Clinical and Translational Science AwardKL2TR001421 · NCATS · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI MILLER, DAVID P · 2015 to 2023
$5.8M
Biomechanical Basis of Pediatric mTBI Due to Sports Related ConcussionR01NS094410 · NINDS · VIRGINIA POLYTECHNIC INST AND ST UNIV · PI DUMA, STEFAN, GREENWALD, RICHARD M · 2015 to 2019
$3.3M
iTAKL: Imaging Telemetry And Kinematic modeLing in youth footballR01NS082453 · NINDS · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI GIOIA, GERARD A., MALDJIAN, JOSEPH A · 2014 to 2018
$3.3M
iTAKL:Imaging Telemetry And Kinematic modeLing in youth football-High SchoolR01NS091602 · NINDS · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI MALDJIAN, JOSEPH A, STITZEL, JOEL DOUGLAS · 2016 to 2020
$3.2M
NCATS NIH HHS KL2 TR001421NINDS NIH HHS R01 NS082453NINDS NIH HHS R01 NS091602NINDS NIH HHS R01 NS094410
6 · The paper itself

Abstract

objectiveThere is a growing body of literature informing efforts to improve the safety of football; however, research relating on-field activity to head impacts in youth football is limited. Therefore, the objective of this study was to compare head impact exposure (HIE) measured in game plays among 3 youth football teams.

methodsHead impact and video data were collected from athletes (ages 10-13 years) participating on 3 youth football teams. Video analysis was performed to verify head impacts and assign each to a specific play type. Each play was categorized as a down, punt, kickoff, field goal, or false start. Kickoffs and punts were classified as special teams. Downs were classified as running, passing, or other. HIE was quantified by play type in terms of mean, median, and 95th percentile linear and rotational acceleration. Mixed-effects models were used to assess differences in acceleration among play types. Contact occurring on special teams plays was evaluated using a standardized video abstraction form.

resultsA total of 3003 head impacts over 27.5 games were analyzed and paired with detailed video coding of plays. Most head impacts were attributed to running (79.6%), followed by passing (14.0%), and special teams (6.4%) plays. The 95th percentile linear acceleration measured during each play type was 52.6g, 50.7g, and 65.5g, respectively. Special teams had significantly greater mean linear acceleration than running and passing plays (both p = 0.03). The most common kick result on special teams was a deep kick, of which 85% were attempted to be returned. No special teams plays resulted in a touchback, and one resulted in a fair catch. One-third of all special teams plays and 92% of all nonreturned kicks resulted in athletes diving toward the ball.

conclusionsThe results demonstrate a trend toward higher head impact magnitudes on special teams than for running and passing plays, but a greater number of impacts were measured during running plays. Deep kicks were most common on special teams, and many returned and nonreturned kicks resulted in athletes diving toward the ball. These results support policy changes to youth special teams plays, including modifying the yard line the ball is kicked from and coaching proper return technique. Further investigation into biomechanical exposure measured during game impact scenarios is needed to inform policy relevant to the youth level.

Indexed as

biomechanicsfootballhead accelerationhead impactsinjurypediatricstrauma

Identifiers

PMID31075762
PMCPMC10958456

What OpenQuestion holds

Textmetadata
LicenceTDM
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.