Drill Intensity and Head Impact Exposure in Adolescent Football Article Swipe
Kyle Kercher
,
Jesse A. Steinfeldt
,
Jonathan T. Macy
,
Dong‐Chul Seo
,
Keisuke Kawata
·
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.1542/peds.2022-057725
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.1542/peds.2022-057725
BACKGROUND AND OBJECTIVES The objective of this study was to examine head-impact exposure by intensity level and position group, and to test the hypothesis that there would be an increase in cumulative head-impact exposure between drill intensities after controlling for duration in each level with air recording the lowest frequency and magnitude and live recording the highest: air < bags < control < thud < live. METHODS We conducted a prospective, multisite study in 1 season with players from 3 high school football teams (n = 74). Each player wore a sensor-installed mouthguard, which monitored head-impact frequency, peak linear acceleration (PLA), and peak rotational acceleration (PRA). Practice drills and games were categorized by level of contact. RESULTS A total of 7312 impacts were recorded with a median of 67 (interquartile range:128) impacts per player. After controlling for duration, increases in head-impact outcomes by level of contact were observed (air < bags = control < thud = live). Live drills had higher cumulative head-impact frequency (45.4 ± 53.0 hits) and magnitude (PLA: 766.3 ± 932.9 g; PRA: 48.9 ± 61.3 kilorad/s2) per player than other levels (P < .0001). In comparison, air drills had the lowest cumulative frequency (4.2 ± 6.9 hits) and magnitude (PLA: 68.0 ± 121.6 g; PRA: 6.4 ± 13.2 kilorad/s2). CONCLUSIONS These data support the levels-of-contact system as a practical approach to limiting head-impact exposure in tackle football. Our findings are clinically important, because data have begun to suggest the relationship between chronic head-impact exposure and decline in brain health. Since head-impact exposure was influenced by levels of contact, regulation of the duration of certain drill intensities (eg, thud, live) may associate with reduced head-impact exposure in high school football.
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Concepts
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1542/peds.2022-057725
- OA Status
- green
- Cited By
- 11
- References
- 39
- Related Works
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- OpenAlex ID
- https://openalex.org/W4304889408
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4304889408Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1542/peds.2022-057725Digital Object Identifier
- Title
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Drill Intensity and Head Impact Exposure in Adolescent FootballWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2022Year of publication
- Publication date
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2022-10-13Full publication date if available
- Authors
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Kyle Kercher, Jesse A. Steinfeldt, Jonathan T. Macy, Dong‐Chul Seo, Keisuke KawataList of authors in order
- Landing page
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https://doi.org/10.1542/peds.2022-057725Publisher landing page
- Open access
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YesWhether a free full text is available
- OA status
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greenOpen access status per OpenAlex
- OA URL
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https://www.ncbi.nlm.nih.gov/pmc/articles/9675985Direct OA link when available
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Medicine, Interquartile range, Drill, Intensity (physics), Head (geology), Demography, Surgery, Materials science, Quantum mechanics, Sociology, Physics, Metallurgy, Geomorphology, GeologyTop concepts (fields/topics) attached by OpenAlex
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11Total citation count in OpenAlex
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2025: 4, 2024: 3, 2023: 4Per-year citation counts (last 5 years)
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39Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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