ArticleJournal of athletic training2016
Football Players' Head-Impact Exposure After Limiting of Full-Contact Practices.
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 37 papers, 5 of them syntheses that pooled it.
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.
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Who cites it
37 citing papers in PubMed, 5 syntheses or guidelines pooled it.
- Prevention strategies and modifiable risk factors for concussion: a systematic review and meta-analysis for the Female, woman and girl/or Athlete Injury pRevention (FAIR) consensus.British journal of sports medicine · 2025Pooled it
- Head Games: A Systematic Review and Meta-analysis Examining Concussion and Head Impact Incidence Rates, Modifiable Risk Factors, and Prevention Strategies in Youth Tackle Football.Sports medicine (Auckland, N.Z.) · 2022Pooled it
- Head Impact Research Using Inertial Sensors in Sport: A Systematic Review of Methods, Demographics, and Factors Contributing to Exposure.Sports medicine (Auckland, N.Z.) · 2022Pooled it
- The Effectiveness of Regulations and Behavioral Interventions on Head Impacts and Concussions in Youth, High-School, and Collegiate Football: A Systematized Review.Annals of biomedical engineering · 2020Pooled it
- Head-Impact-Measurement Devices: A Systematic Review.Journal of athletic training · 2017Pooled it
- Whistleblower: the front line and critical facilitator for injury prevention policy?Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention · 2025Article
- Sex Differences in Head Acceleration Events in Law Enforcement Corrections Cadets.Annals of biomedical engineering · 2025Article
- Hawaiian High School Football Player Positional Differences in Helmet Impact Characteristics.Journal of athletic training · 2024Article
- Protocol for COACH, an evidence-based intervention for improved head impact safety in youth American football developed using a community-engaged approach.Contemporary clinical trials communications · 2024Article
- A Description of Suspected Concussions in Football-Related Activities among K-12 Students in Utah.The Journal of school nursing : the official publication of the National Association of School Nurses · 2024Article
- Capturing Head Impacts in Boxing: A Video-Based Comparison of Three Wearable Sensors.Annals of biomedical engineering · 2024Article
- Publicly available data sources in sport-related concussion research: a caution for missing data.Injury epidemiology · 2024Article
- Factors That May Influence Americans' Views on When Children Should Start Playing Tackle Football.Journal of athletic training · 2024Article
- Efficacy of Guardian Cap Soft-Shell Padding on Head Impact Kinematics in American Football: Pilot Findings.International journal of environmental research and public health · 2023Article
- Leveraging football accelerometer data to quantify associations between repetitive head impacts and chronic traumatic encephalopathy in males.Nature communications · 2023Article
- Similar Concussion Rates in Spring Football and Preseason: Findings From the Concussion Assessment, Research and Education Consortium.Journal of athletic training · 2023Observational
- Association Between Head Impact Biomechanics and Physical Load in College Football.Annals of biomedical engineering · 2022Article
- Drill Intensity and Head Impact Exposure in Adolescent Football.Pediatrics · 2022Article
- Avenues for Sport-Related Concussion Prevention in High School Football: Effect of Limiting Collision Practices.Journal of athletic training · 2022Article
- Prevalence of Suspected Concussions Among K-12 Students in Utah: Findings From Utah's Student Injury Reporting System.The Journal of school health · 2022Article
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
contextSporting organizations limit full-contact football practices to reduce concussion risk and based on speculation that repeated head impacts may result in long-term neurodegeneration.
objectiveTo directly compare head-impact exposure in high school football players before and after a statewide restriction on full-contact practices.
designCross-sectional study.
settingHigh school football field. PATIENTS OR OTHER
participantsParticipants were varsity football athletes from a single high school. Before the rule change, 26 athletes (age = 16.2 ± 0.8 years, height = 179.6 ± 6.4 cm, weight = 81.9 ± 13.1 kg) participated. After the rule change, 24 athletes (age = 15.9 ± 0.8 years, height = 178.3 ± 6.5 cm, weight = 76.2 ± 11.6 kg) participated. Nine athletes participated in both years of the investigation. MAIN OUTCOME MEASURE(S): Head-impact exposure was monitored using the Head Impact Telemetry System while the athletes participated in football games and practices in the seasons before and after the rule change. Head-impact frequency, location, and magnitude (ie, linear acceleration, rotational acceleration, and Head Impact Telemetry severity profile [HITsp], respectively) were measured.
resultsA total of 15 398 impacts (592 impacts per player per season) were captured before the rule change and 8269 impacts (345 impacts per player per season) after the change. An average 42% decline in impact exposure occurred across all players, with practice-exposure declines occurring among linemen (46% decline); receivers, cornerbacks, and safeties (41% decline); and tight ends, running backs (including fullbacks), and linebackers (39% decline). Impact magnitudes remained largely unchanged between the years.
conclusionsA rule change limiting full-contact high school football practices appears to have been effective in reducing head-impact exposure across all players, with the largest reduction occurring among linemen. This finding is likely associated with the rule modification, particularly because the coaching staff and offensive scheme remained consistent, yet how this reduction influences concussion risk and long-term cognitive health remains unknown.
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Registered trials
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