01442nas a2200217   4500000000100000008004100001100002200042700001000064700001500074700001300089700001900102700001600121700001400137700001400151245010000165250001500265300001000280490000700290520088100297020004601178       2011                            d1 aHeritier Stephane1 aLi L.1 aCollins M.1 aFinch C.1 aStevenson Mark1 aMcIntosh A.1 aHollis S.1 aShores E.00aMild traumatic brain injury among a cohort of rugby union players: predictors of time to injury  a2011/04/13  a997-90 v453 a<p>
This study reports the time to sustain a mild traumatic brain injury (mTBI) among a cohort of community rugby union players. Demographic and player characteristics were collected and players followed up for between one and three playing seasons. 7% of the cohort sustained an mTBI within 10 h of game time, increasing twofold to 14% within 20 h. The mean time to first mTBI was 8 h with an SD of 6.2 (median 6.8 h; IQR: 2.9-11.7 h). Players reporting a recent history of concussion were 20% more likely to sustain an mTBI after 20 h of game time compared with those with no recent history of concussion. Players were likely to sustain an mTBI in shorter time if they trained for &lt;3 h/week (HR=1.48, p=0.03) or had a body mass index &lt;27 (HR=1.77, p=0.007). The findings highlight modifiable characteristics to reduce the likelihood of shortened time to mTBI.
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