ArticleJournal of athletic training2024
Preliminary Examination of Guardian Cap Head Impact Kinematics Using Instrumented Mouthguards.
Article in Journal of athletic training, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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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
6 citing papers in PubMed.
- Immediate Cervical Muscle Response to Optimal Occlusal Positioning: A Crucial Part of Concussion Risk Management.Journal of clinical medicine · 2025Article
- National Football League (NFL) "Dynamic Kickoff" Rule Change: A Comparative Analysis of Concussion and Musculoskeletal Injury Incidence.Orthopaedic journal of sports medicine · 2025Article
- Smooth Pursuit Velocity After a Season of Repetitive Head Impacts in American Football Players.JAMA ophthalmology · 2025Article
- Beyond the Hit: The Hidden Costs of Repetitive Head Trauma.Neuroscience insights · 2025Review
- 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
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Authors and funding
7 authors.
Funding
Abstract
contextGuardian Caps (GCs) are currently the most popular external helmet add-on designed to reduce the magnitude of head impacts experienced by American football players. Guardian Caps have been endorsed by influential professional organizations; however, few studies evaluating their efficiency are publicly available.
objectiveTo present preliminary on-field head kinematics data for National Collegiate Athletic Association (NCAA) Division I American football players using instrumented mouthguards through closely matched preseason workouts with and without GCs.
designCase series.
settingThe 2022 American football preseason. PATIENTS OR OTHER
participantsTwenty-five male NCAA Division I student-athletes participating in American football completed some portion of the 6 workouts included in this study. Of the 25 participants, 7 completed all 6 workouts using their instrumented mouthguards. MAIN OUTCOME MEASURE(S): Peak linear acceleration (PLA), peak angular acceleration (PAA), and total impacts were collected via instrumented mouthguards during 3 preseason workouts using traditional helmets (TRAD condition) and 3 using a TRAD and GCs (GC condition). The TRAD and GC values for PLA, PAA, and total impacts were evaluated using analyses of variance.
resultsNo difference was present between the collapsed mean values for the entire sample between the TRAD and GC conditions for PLA (TRAD = 16.3g ± 2.0g, GC = 17.2g ± 3.3g, P = .20), PAA (TRAD = 992.1 ± 209.2 rad/s2, GC = 1029.4 ± 261.1 rad/s2, P = .51), or the total number of impacts (TRAD = 9.3 ± 4.7, GC = 9.7 ± 5.7, P = .72). Similarly, no difference was observed between the TRAD and GC conditions for PLA (TRAD = 16.1g ± 1.2g, GC = 17.2g ± 2.79g, P = .32), PAA (TRAD = 951.2 ± 95.4 rad/s2, GC = 1038.0 ± 166.8 rad/s2, P = .29), or total impacts (TRAD = 9.6 ± 4.2, GC = 9.7 ± 5.04, P = .32) between sessions for the 7 players who completed all 6 workouts.
conclusionsThese data suggested no difference in head kinematics data (PLA, PAA, and total impacts) when GCs were worn. Therefore, GCs may not be effective in reducing the magnitude of head impacts experienced by NCAA Division I American football players.
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