Evidence map›Paper›PMID 27111585›Full record

ArticleJournal of athletic training2016

Safe-Play Knowledge, Aggression, and Head-Impact Biomechanics in Adolescent Ice Hockey Players.

Julianne D Schmidt, Alice F Pierce, Kevin M Guskiewicz, Johna K Register-Mihalik, Derek N Pamukoff, Jason P Mihalik

Abstract readComparative Study
In one paragraph

Article in Journal of athletic training, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Changes in volumetric and metabolic parameters relate to differences in exposure to sub-concussive head impacts.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2020
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
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

6 authors.

Julianne D SchmidtDepartment of Kinesiology and Concussion Research Laboratory, University of Georgia, Athens.
Alice F PierceCarolina Family Practice and Sports Medicine - A Duke Health Clinic, Cary, NC.
Kevin M GuskiewiczDepartment of Exercise and Sport Science, Matthew A. Gfeller Sport-Related Traumatic Brain Injury Research Center, and Injury Prevention Research Center, University of North Carolina at Chapel Hill.
Johna K Register-MihalikDepartment of Exercise and Sport Science, Matthew A. Gfeller Sport-Related Traumatic Brain Injury Research Center, and Injury Prevention Research Center, University of North Carolina at Chapel Hill.
Derek N PamukoffDepartment of Kinesiology, California State University at Fullerton.
Jason P MihalikDepartment of Exercise and Sport Science, Matthew A. Gfeller Sport-Related Traumatic Brain Injury Research Center, and Injury Prevention Research Center, University of North Carolina at Chapel Hill.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

contextAddressing safe-play knowledge and player aggression could potentially improve ice hockey sport safety.

objectivesTo compare (1) safe-play knowledge and aggression between male and female adolescent ice hockey players and (2) head-impact frequency and severity between players with high and low levels of safe-play knowledge and aggression during practices and games.

designCohort study.

settingOn field. PATIENTS OR OTHER

participantsForty-one male (n = 29) and female (n = 12) adolescent ice hockey players. INTERVENTION(S): Players completed the Safe Play Questionnaire (0 = less knowledge, 7 = most knowledge) and Competitive Aggressiveness and Anger Scale (12 = less aggressive, 60 = most aggressive) at midseason. Aggressive penalty minutes were recorded throughout the season. The Head Impact Telemetry System was used to capture head-impact frequency and severity (linear acceleration [g], rotational acceleration [rad/s(2)], Head Impact Technology severity profile) at practices and games. MAIN OUTCOME MEASURE(S): One-way analyses of variance were used to compare safe play knowledge and aggression between sexes. Players were categorized as having high or low safe-play knowledge and aggression using a median split. A 2 × 2 mixed-model analysis of variance was used to compare head-impact frequency, and random-intercept general linear models were used to compare head-impact severity between groups (high, low) and event types (practice, game).

resultsBoys (5.8 of 7 total; 95% confidence interval [CI] = 5.3, 6.3) had a trend toward better safe-play knowledge compared with girls (4.9 of 7 total; 95% CI = 3.9, 5.9; F1,36 = 3.40, P = .073). Less aggressive male players sustained significantly lower head rotational accelerations during practices (1512.8 rad/s (2) , 95% CI = 1397.3, 1637.6 rad/s(2)) versus games (1754.8 rad/s (2) , 95% CI = 1623.9, 1896.2 rad/s(2)) and versus high-aggression players during practices (1773.5 rad/s (2) , 95% CI = 1607.9, 1956.3 rad/s (2) ; F1,26 = 6.04, P = .021).

conclusionsCoaches and sports medicine professionals should ensure that athletes of all levels, ages, and sexes have full knowledge of safe play and should consider aggression interventions for reducing head-impact severity among aggressive players during practice.

Indexed as

Athletic InjuriesBrain ConcussionCraniocerebral TraumaHockeyAdolescentAggressionAnger Management TherapyAthletesBiomechanical PhenomenaCohort StudiesFemaleHead Protective DevicesHumansMaleSafety ManagementSex Factorsadolescent sportsconcussionshead traumamild traumatic brain injuries

Identifiers

PMID27111585
PMCPMC5013701

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.