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In Vivo Protocol of Controlled Subconcussive Head Impacts for the Validation of Field Study Data
Published on: April 18, 2019
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Quantifying head impacts and neurocognitive performance in collegiate boxers.
Brandon K Doan1, Kristin J Heaton2, Brian P Self3
1Associate Professor of Exercise Science, Georgia Gwinnett College, School of Science & Technology, Lawrenceville, GA, USA.
Journal of Sports Sciences
|December 21, 2021
Summary
Collegiate boxers experienced measurable neurocognitive changes after sparring, with more head impacts linked to poorer memory. This study quantifies head impacts to improve safety in contact sports.
Area of Science:
- Sports Medicine
- Neuroscience
- Biomechanics
Background:
- Head impacts are a concern in contact sports like boxing.
- Neurocognitive function can be affected by head trauma.
- Quantifying head impacts is crucial for understanding injury risk.
Purpose of the Study:
- To quantify head impacts in collegiate male boxers.
- To assess neurocognitive performance changes after sparring.
- To explore the relationship between head impacts and cognitive function.
Main Methods:
- 27 intercollegiate male boxers participated in two, two-minute sparring rounds.
- Head impacts were measured using Instrumented Boxing Headgear (IBH).
- Neurocognitive performance was assessed pre- and post-sparring using ImPACT™ and ANAM4® MIL computerized test batteries.
Main Results:
- An average of 27.6 impacts above the 9.6 g threshold were recorded per boxer.
- Average peak linear acceleration was 23.48 g; peak rotational acceleration was 1761.40 rad/s².
- Small declines in delayed memory and improvements in response time were observed post-sparring. Number of impacts and concussion history predicted poorer memory.
Conclusions:
- Head impact frequency and location in collegiate boxing are similar to amateur boxing, but impact magnitude is lower.
- Subtle neurocognitive decrements, particularly in delayed memory, were noted after sparring.
- Understanding head impact kinematics can enhance safety protocols in boxing and other contact sports.
