Frequency and location of head impact exposures in individual collegiate football players.

@article{Crisco2010FrequencyAL,
  title={Frequency and location of head impact exposures in individual collegiate football players.},
  author={Joseph J. Crisco and Russell Fiore and Jonathan Beckwith and Jeffrey J. Chu and Per Gunnar Brolinson and Stefan M. Duma and Thomas W. McAllister and A. C. Duhaime and Richard M. Greenwald},
  journal={Journal of athletic training},
  year={2010},
  volume={45 6},
  pages={
          549-59
        }
}
CONTEXT Measuring head impact exposure is a critical step toward understanding the mechanism and prevention of sport-related mild traumatic brain (concussion) injury, as well as the possible effects of repeated subconcussive impacts. OBJECTIVE To quantify the frequency and location of head impacts that individual players received in 1 season among 3 collegiate teams, between practice and game sessions, and among player positions. DESIGN Cohort study. SETTING Collegiate football field… 

Figures from this paper

Magnitude of head impact exposures in individual collegiate football players.
TLDR
The findings of this study provide essential data for future investigations that aim to establish the correlations between head impact exposure, acute brain injury, and long-term cognitive deficits.
The Effect of Head Impact Location on Day of Diagnosed Concussion in College Football.
TLDR
It may be more difficult to mitigate concussive forces sustained in impacts to the top and sides of the head than the front of theHead, which falls in line with previous research demonstrating that reduced impact magnitudes may lessen concussion risk.
Practice type effects on head impact in collegiate football.
TLDR
The findings suggest that regulation of practice equipment could be a fair and effective way to substantially reduce subconcussive head impact in thousands of collegiate football players.
Head Impact Exposure and Neurologic Function of Youth Football Players.
TLDR
Whereas youth football players can experience remarkably similar head impact forces as high school players, cumulative subconcussive HIE throughout one youth football season may not be detrimental to short-term clinical measures of neurologic function.
Head Impact Exposure in Youth Football: High School Ages 14 to 18 Years and Cumulative Impact Analysis
TLDR
An impact exposure metric utilizing concussion injury risk curves was created to quantify cumulative exposure for each participating player over the course of the season and will provide a metric that may be used to better understand the cumulative effects of repetitive head impacts, injury mechanisms, and head impact exposure of athletes in football.
Head impact exposure sustained by football players on days of diagnosed concussion.
TLDR
Players sustained more impacts and impacts of higher severity on days of diagnosed concussion than on days without diagnosed concussion and those associated with peak linear acceleration are the best predictors of immediately diagnosed concussion.
The Effect of Player Contact Characteristics on Head Impact Exposure in Youth Football Games.
TLDR
When at least one player had a recorded impact, players who were struck tended to have higher rotational acceleration than players in striking positions and lighter players and taller players experienced higher mean head accelerations compared with heavier players and shorter players.
Cumulative exposure risk of concussion for youth and high school football head impacts
TLDR
The CER metric presented in this study is novel as it accounts for the frequency and severity of each player's impacts and contributes to the understanding of cumulative head impact exposure in football which will further the authors' understanding of the biomechanics of head injury.
Head Impact Exposure in Junior and Adult Australian Football Players
TLDR
There was a significant increase in the frequency of head impacts for midfielders in both grades once the authors accounted for player position and, by targeting education and prevention strategies, a decrease in the incidence of sports-related concussion may result.
...
...

References

SHOWING 1-10 OF 30 REFERENCES
IN VIVO STUDY OF HEAD IMPACTS IN FOOTBALL: A COMPARISON OF NATIONAL COLLEGIATE ATHLETIC ASSOCIATION DIVISION I VERSUS HIGH SCHOOL IMPACTS
TLDR
Differences in the frequency and magnitude of head acceleration after impact exist between a Division I college team and a high school team, and skill position players typically sustain the highest-level impacts.
Epidemiology of Concussion in Collegiate and High School Football Players
TLDR
Players who sustained one concussion in a season were three times more likely to sustain a second concussion in the same season compared with uninjured players, and contact with artificial turf appears to be associated with a more serious concussion than contact with natural grass.
Analysis of Real-time Head Accelerations in Collegiate Football Players
  • S. Duma, S. Manoogian, J. Crisco
  • Medicine
    Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine
  • 2005
TLDR
The primary finding of this study is that the helmet-mounted accelerometer system proved effective at collecting thousands of head impact events and providing contemporaneous head impact parameters that can be integrated with existing clinical evaluation techniques.
Analysis of linear head accelerations from collegiate football impacts
TLDR
This study presents an extremely large data set from human head impacts that provides valuable insight into the lower limits of head acceleration that cause mild traumatic brain injuries.
HEAD IMPACT SEVERITY MEASURES FOR EVALUATING MILD TRAUMATIC BRAIN INJURY RISK EXPOSURE
TLDR
This study is the first to the authors' knowledge to quantify improvements in the sensitivity of a biomechanical measure to incidence of concussion when impact location is considered and develops a novel measure of head impact severity combining these measures into a single score that better predicts the incidence of concussions.
Concussion in Professional Football: Location and Direction of Helmet Impacts—Part 2
TLDR
The location, direction, and severity of helmet impacts causing concussion in the National Football League have been defined from analysis of game video and laboratory reconstruction and define the circumstances in which helmets need to reduce head injury risks in professional football.
Comparison of impact data in hockey, football, and soccer.
PURPOSE To compare accelerational forces to the head in high school-level football, hockey, and soccer athletes. METHODS Acceleration of impact was measured within the helmet of high school hockey
Traumatic brain injury in high school athletes.
TLDR
Rates of MTBI vary among sports and none of the 10 popular high school sports the authors studied is without the occurrence of an MTBI, with football accounting for about 63% of cases.
Head acceleration is less than 10 percent of helmet acceleration in football impacts.
TLDR
It is shown that the response of the head and the helmet vary greatly and the in-helmet system matches theHead acceleration is less than 10 percent of helmet acceleration in football impacts; moreover, the HIT System is able to accurately measure the head acceleration.
Injury patterns in selected high school sports: a review of the 1995-1997 seasons.
TLDR
An inherent risk of injury is associated with participation in high school sports based on the nature of the game and the activities of the players, and injury prevention programs should be in place for both practices and games.
...
...