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Related Concept Videos

Impact01:30

Impact

Impact occurs when two bodies collide, leading to the application of impulsive forces between them. Analyzing impact mechanics involves considering two colliding particles moving along a line known as the line of impact, which passes through their centers and is perpendicular to the contact plane.
When particles with different initial velocities collide, they induce deformation by applying equal and opposite impulses. At the point of maximum deformation, the particles move together with...

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In Vivo Protocol of Controlled Subconcussive Head Impacts for the Validation of Field Study Data
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In Vivo Protocol of Controlled Subconcussive Head Impacts for the Validation of Field Study Data

Published on: April 18, 2019

Subconcussive head impact biomechanics: comparing differing offensive schemes.

Douglas Martini1, James Eckner, Jeffery Kutcher

  • 1School of Kineisology, Neurotrauma Research Laboratory, University of Michigan, Ann Arbor, MI 48109-2013, USA.

Medicine and Science in Sports and Exercise
|November 9, 2012
PubMed
Summary
This summary is machine-generated.

High school football players using a run-first offense experienced more frequent, lower-magnitude head impacts than those in a pass-first offense. This study highlights how offensive schemes influence head impact exposure in athletes.

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Published on: September 21, 2017

Area of Science:

  • Sports Medicine
  • Biomechanics
  • Neuroscience

Background:

  • Subconcussive impacts are increasingly linked to cognitive changes.
  • Head impact biomechanics in football are well-studied, but offensive schemes' influence is not.
  • Understanding these factors is crucial for athlete safety.

Purpose of the Study:

  • To quantify and compare head impact frequencies and magnitudes between two distinct offensive schemes in high school football.
  • To investigate the relationship between offensive strategy and head impact exposure.

Main Methods:

  • 83 high school football athletes were studied across two seasons.
  • Athletes were divided into run-first (42) and pass-first (41) offensive schemes.
  • The Head Impact Telemetry System (HITS) recorded head impact data (linear/rotational acceleration).

Main Results:

  • A total of 35,620 head impacts were recorded.
  • Run-first offenses averaged 456 impacts/season; pass-first offenses averaged 304 impacts/season.
  • Pass-first offenses had significantly higher impact magnitudes (linear/rotational acceleration, HITs) than run-first offenses.

Conclusions:

  • Offensive schemes significantly influence head impact exposure in football.
  • Run-first offenses are associated with higher frequency but lower magnitude head impacts.
  • Pass-first offenses result in lower frequency but higher magnitude head impacts.