Trial reportAnnals of biomedical engineering2020
High Energy Side and Rear American Football Head Impacts Cause Obvious Performance Decrement on Video.
Trial report in Annals of biomedical engineering, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
What it found
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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.
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.
Who cites it
18 citing papers in PubMed, 31 citations in OpenAlex.
- Smooth Pursuit Velocity After a Season of Repetitive Head Impacts in American Football Players.JAMA ophthalmology · 2025Article
- Mental health trajectory throughout high school football career: a four-year prospective cohort study.Frontiers in psychiatry · 2025Article
- Instrumented Mouthguard Decoupling Affects Measured Head Kinematic Accuracy.Annals of biomedical engineering · 2024Article
- Head Impacts in the Top 1% by Peak Linear Acceleration and/or Work Cause Immediate Concussion Signs and 'Check Engine' Responses in Military Service Members and Civilian Athletes.Annals of biomedical engineering · 2024Article
- Biofidelity and Limitations of Instrumented Mouthguard Systems for Assessment of Rigid Body Head Kinematics.Annals of biomedical engineering · 2024Article
- Head Acceleration Events in Male Community Rugby Players: An Observational Cohort Study across Four Playing Grades, from Under-13 to Senior Men.Sports medicine (Auckland, N.Z.) · 2024Observational
- Association of Auditory Interference and Ocular-Motor Response with Subconcussive Head Impacts in Adolescent Football Players.Neurotrauma reports · 2024Article
- Longitudinal Associations of Clinical and Biochemical Head Injury Biomarkers With Head Impact Exposure in Adolescent Football Players.JAMA network open · 2023Article
- Finite element evaluation of an American football helmet featuring liquid shock absorbers for protecting against concussive and subconcussive head impacts.Frontiers in bioengineering and biotechnology · 2023Article
- Longitudinal, prospective study of head impacts in male high school football players.PloS one · 2023Article
- Validation of an instrumented mouthguard in rugby union-a pilot study comparing impact sensor technology to video analysis.Frontiers in sports and active living · 2023Article
- Consensus Head Acceleration Measurement Practices (CHAMP): Study Design and Statistical Analysis.Annals of biomedical engineering · 2022Article
- American Football Helmet Effectiveness Against a Strain-Based Concussion Mechanism.Annals of biomedical engineering · 2022Article
- On-Field Deployment and Validation for Wearable Devices.Annals of biomedical engineering · 2022Review
- Drill Intensity and Head Impact Exposure in Adolescent Football.Pediatrics · 2022Article
- Predictive Factors of Kinematics in Traumatic Brain Injury from Head Impacts Based on Statistical Interpretation.Annals of biomedical engineering · 2021Article
- Time Window of Head Impact Kinematics Measurement for Calculation of Brain Strain and Strain Rate in American Football.Annals of biomedical engineering · 2021Article
- Quantifying head acceleration exposure via instrumented mouthguards (iMG): a validity and feasibility study protocol to inform iMG suitability for the TaCKLE project.BMJ open sport & exercise medicine · 2021Article
Corrections and comments
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Authors and funding
19 authors at 10 institutions in 2 countries.
Funding
Abstract
The objective of this study was to compare head impact data acquired with an impact monitoring mouthguard (IMM) to the video-observed behavior of athletes' post-collision relative to their pre-collision behaviors. A total of n = 83 college and high school American football players wore the IMM and were video-recorded over 260 athlete-exposures. Ex-athletes and clinicians reviewed the video in a two-step process and categorized abnormal post-collision behaviors according to previously published Obvious Performance Decrement (OPD) definitions. Engineers qualitatively reviewed datasets to check head impact and non-head impact signal frequency and magnitude. The ex-athlete reviewers identified 2305 head impacts and 16 potential OPD impacts, 13 of which were separately categorized as Likely-OPD impacts by the clinical reviewers. All 13 Likely-OPD impacts were in the top 1% of impacts measured by the IMM (ranges 40-100 g, 3.3-7.0 m/s and 35-118 J) and 12 of the 13 impacts (92%) were to the side or rear of the head. These findings require confirmation in a larger data set before proposing any type of OPD impact magnitude or direction threshold exists. However, OPD cases in this study compare favorably with previously published impact monitoring studies in high school and college American football players that looked for OPD signs, impact magnitude and direction. Our OPD findings also compare well with NFL reconstruction studies for ranges of concussion and sub-concussive impact magnitudes in side/rear collisions, as well as prior theory, analytical models and empirical research that suggest a directional sensitivity to brain injury exists for single high-energy impacts.
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What OpenQuestion holds
Registered trials
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.