The George Institute for Global Health, Sydney, Australia
Br J Sports Med. 2011 Sep;45(12):997-9. doi: 10.1136/bjsm.2010.079707. Epub 2011 Apr 10.
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 <3 h/week (HR=1.48, p=0.03) or had a body mass index <27 (HR=1.77, p=0.007). The findings highlight modifiable characteristics to reduce the likelihood of shortened time to mTBI.
本研究报告了队列中社区橄榄球联盟球员发生轻度创伤性脑损伤 (mTBI) 的持续时间。收集了人口统计学和球员特征，并对球员进行了 1 至 3 个赛季的随访。7%的队列成员在比赛时间 10 小时内遭受 mTBI，20 小时内增加到 14%。首次 mTBI 的平均时间为 8 小时，标准差为 6.2（中位数 6.8 小时；IQR：2.9-11.7 小时）。与没有近期脑震荡史的球员相比，报告近期脑震荡史的球员在 20 小时的比赛时间后发生 mTBI 的可能性增加了 20%。如果每周训练时间<3 小时（HR=1.48，p=0.03）或体重指数<27（HR=1.77，p=0.007），球员发生 mTBI 的时间更短。这些发现突出了可改变的特征，以降低 mTBI 发生的可能性。
