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Quantifying head impact biomechanical differences between commonly employed cleaning levels: a critical research

Rachel K Le^1,2, Landon B Lempke³, Melissa N Anderson⁴

¹Department of Exercise Science, Mercer University, Macon, Georgia, USA.

|May 11, 2023

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Filtering head impact data by removing pauses and breaks is recommended for youth football, as it closely matches video-verified results without extensive manual review. This improves the accuracy of sport safety assessments.

Area of Science:

Sports Medicine
Biomechanics
Wearable Technology

Background:

Wearable accelerometry is crucial for quantifying head impacts in sports to enhance safety.
Data cleaning methods significantly influence the accuracy of head impact analysis.

Purpose of the Study:

To compare head impact rates and magnitudes using three data cleaning levels in youth tackle football.
To determine the optimal data cleaning strategy for wearable sensor data in sports.

Main Methods:

Utilized Triax SIM-G sensors to collect head impact data from 23 male youth tackle football players.
Compared three cleaning levels: Level-1 (raw data), Level-2 (removed pauses/breaks), and Level-3 (video-verified).
Analyzed impact rates, impact rate ratios (IRRs), peak linear acceleration (PLA), and peak angular velocity (PAV).

Keywords:

Youth sport concussion impact sensors mild traumatic brain injury repetitive head impacts

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Main Results:

Level-1 showed significantly higher impact rates than Level-2 and Level-3.
Level-2 also had higher impact rates than Level-3, but PAV did not differ significantly across levels.
Peak linear acceleration (PLA) showed no significant differences across the three cleaning levels.

Conclusions:

Filtering out pauses and breaks (Level-2) provides impact data comparable to video verification (Level-3).
This filtering method offers a more efficient and reliable approach to analyzing head impact data from wearable sensors.
The findings support the use of data filtering to improve the accuracy and practicality of sport safety research.