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Stanford Study’s New Data About Sports Concussions
Stanford Medicine researchers found 100 g head impacts carry a 50% concussion risk and said rotational force did not improve predictions.
- On Monday, November 9, 2026, Stanford Medicine researchers published a study in the Annals of Biomedical Engineering finding that linear head acceleration predicts concussions more accurately than rotational motion.
- This research challenges an 85-year-old theory from physicist A.H.S. Holbourn, who previously identified rotational motion as the primary driver of brain injuries. Data came from motion-sensing mouthguards worn by 203 athletes across seven sports.
- Analyzing 47 concussive impacts and 3,804 non-concussive events, the team determined that a 100g impact carries a 50% risk of concussion. A collision of 150g carries a risk of more than 99%.
- "The threshold is lower than people had previously thought," said lead author Jessica Towns. Current safety guidelines for football helmets and cycling gear may be underestimating injury risks.
- Senior author David Camarillo cited an "urgent need to get more of this data on kids," noting that linear acceleration might be a distinct, common injury mechanism. Future helmet design could be refined based on these findings.
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26 Articles
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Stanford study challenges long-held dogma on causes of concussions
Concussions - essentially mild traumatic brain injuries - are among the most common injuries sustained on athletic fields. In the U.S., an estimated 3.8 million sports-related concussions occur every year.
·Mona Vale, Australia
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Total News Sources26
Leaning Left4Leaning Right1Center21Last UpdatedBias Distribution81% Center
Bias Distribution
- 81% of the sources are Center
81% Center
15%
C 81%
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