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Impact Biomechanics Reveal Positional and Session Type Differences in Canadian Collegiate Football.

Sebastian D'Amario1, Kaden T Shearer1,2, Nicole S Coverdale1

  • 1Centre for Neuroscience Studies, Queen's University, Kingston, Canada.

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|August 5, 2025
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Summary

Canadian football players experience varied head impacts. Linemen face higher cumulative forces, while skill players endure less frequent, high-magnitude hits, highlighting the need for detailed biomechanical analysis for athlete safety.

Keywords:
Canadabiomechanical phenomenafootballhelmet accelerometerssub‐concussive impacts

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Area of Science:

  • Biomechanics
  • Sports Medicine
  • Neuroscience

Background:

  • Canadian football involves frequent head impacts, but the biomechanics of subconcussive forces are not well understood.
  • Understanding these forces is crucial for assessing potential neurological implications and athlete safety.

Purpose of the Study:

  • To investigate the biomechanical characteristics of head impacts in college-level Canadian varsity football players.
  • To identify factors contributing to subconcussive head impacts based on player position and activity type.

Main Methods:

  • Sixty-four athletes wore head impact sensors during games, practices, and training camps.
  • Analysis included impact frequency, peak linear/rotational acceleration, duration, area under the acceleration-time curve (AUAC), impulse, and head jerk.
  • Participants were categorized into small skill (SS), big skill (BS), and linemen (LN) groups.

Main Results:

  • Linemen exhibited the highest AUAC and impulse values.
  • SS and BS positions had less frequent but higher-magnitude impacts.
  • Games resulted in greater peak accelerations and longer impact durations compared to practices or training camps.

Conclusions:

  • Analyzing linear acceleration time series provides deeper insights into subconcussive impact dynamics than peak values alone.
  • These biomechanical analyses are vital for connecting impact parameters to injury risk and neurophysiological biomarkers.
  • Findings support the development of data-driven strategies to improve safety in contact sports.