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Assessing Head Acceleration Events in Female Community Rugby Union Players: A Cohort Study Using Instrumented

Melanie D Bussey¹, Danielle Salmon^2,3, Bridie Nanai⁴

¹School of Physical Education, Sports and Exercise Sciences, University of Otago, Dunedin, New Zealand. melanie.bussey@otago.ac.nz.

Sports Medicine (Auckland, N.Z.)

|September 5, 2024

Summary

Instrumented mouthguards (iMGs) reveal that premier women rugby players experience the highest head acceleration events (HAEs). More experienced young players show lower rotational acceleration, but experienced premier players face higher HAE risks during tackles, informing injury prevention strategies.

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Area of Science:

Sports Medicine
Biomechanics
Injury Prevention

Background:

The growth of women's rugby necessitates female-specific player welfare, especially for head injury risks.
Instrumented mouthguards (iMGs) are crucial for quantifying head acceleration events (HAEs) in rugby.
Understanding HAEs in women's rugby provides context for injury risk factors.

Purpose of the Study:

To contextualize head acceleration events (HAEs) in female community rugby players.
Utilize instrumented mouthguards (iMGs) and video analysis to assess HAEs.
Identify player demographics and scenarios associated with increased HAE exposure.

Main Methods:

Prospective, observational cohort study of 332 female rugby players (U13, U15, U19, Premier).
Data collected from 38 matches and 80 training sessions using iMGs (5g threshold).
Analysis included HAE incidence, prevalence, and propensity by playing grade, experience, position, and session type.

Main Results:

9151 HAEs recorded; 80% verified. Incidence rate for 10-29g events was 12-18 times higher than >30g events.
Premier players had the highest weekly HAE load (26.2/player/week) and prevalence of >30g events (49%).
Experienced U13-U19 players had lower peak angular acceleration (PAA); experienced Premier players had higher HAE propensity in tackles (RR=1.21).

Conclusions:

Unique data on head accelerations in women's community rugby.
Identifies high-risk player groups and situations for cumulative and acute head accelerations.
Findings support managing training loads, skill execution, and developing targeted injury prevention strategies.