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Updated: May 8, 2025

In Vivo Protocol of Controlled Subconcussive Head Impacts for the Validation of Field Study Data
Published on: April 18, 2019
What Factors Influence Head Acceleration During a Purposeful Header in Soccer Players? A Systematic Review
Rebecca Blyth1, Gerard Farrell2, Anja Zoellner3
1Centre for Health, Activity, and Rehabilitation Research, School of Physiotherapy, University of Otago, 325 Great King Street, Dunedin, 9016, New Zealand. rebecca.blyth@postgrad.otago.ac.nz.
Head acceleration during headers is influenced by ball speed, player sex, and neck strength. Neuromuscular exercises may reduce head acceleration, but traditional strengthening is ineffective. Further research is needed on other factors like vestibular function.
Area of Science:
- Sports Medicine
- Biomechanics
- Concussion Research
Background:
- Head acceleration is a key indicator for concussion risk.
- Factors influencing head acceleration during purposeful headers are not fully understood.
Purpose of the Study:
- To systematically identify factors affecting head acceleration during headers.
- To pinpoint underexplored research areas in head acceleration during headers.
Main Methods:
- Systematic review of studies assessing independent variables on head acceleration during headers.
- Comprehensive database searches (Scopus, Web of Science, etc.) and grey literature search.
- Quality assessment using ROBINS-I, RoB2, Downs and Black, and AXIS tools.
Main Results:
- Sixty studies were included, with diverse designs and methodologies.
- Ball velocity, ball characteristics, impact location, neck training, and demographics influenced head acceleration.
- Increased ball speed/mass/inflation correlated with higher head acceleration; female players experienced greater acceleration than males.
Conclusions:
- Head acceleration during headers is multifactorial, with ball properties and player characteristics playing significant roles.
- Neuromuscular exercises show promise in reducing head acceleration, unlike traditional neck strengthening.
- Future research should explore factors like vestibular function and cervical spine proprioception to enhance header safety.
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