Wennberg Richard A, Tator Charles H
Division of Neurology, Krembil Neuroscience Centre, Toronto Western Hospital, University of Toronto, Ontario, Canada.
Can J Neurol Sci. 2008 Nov;35(5):647-51. doi: 10.1017/s031716710000946x.
The problem of concussions in professional hockey has attracted much recent attention. To evaluate the current state of this injury in the National Hockey League (NHL), we analyzed the concussion incidence and time lost from play due to concussions during the past ten NHL seasons.
Data were obtained from a complete review of injury reports in two different sports media sources covering the NHL seasons 1997-98 through 2007-08. Time lost from play was measured in missed games per concussion.
The incidence of concussions reported in the regular season ranged from a high of 1.81/1000 athlete exposures in 1998-99 to a low of 1.04/1000 athlete exposures in 2005-06. There was a downward trend in the number of concussions reported per season during the past ten years (p=0.01). However, average time lost from play per concussion increased over the same period (p<0.0005). Forwards suffered a disproportionately high percentage of concussions (p<0.0001).
Possibly related to injury reduction efforts, the number of concussions reported per season in the NHL has trended downward in recent years. However, the incidence of concussion remains high and the average time lost from play per concussion has increased. This may reflect increased injury severity in recent years or, alternatively, increased adherence to modern management guidelines preventing premature return to play.
职业曲棍球运动中的脑震荡问题近来备受关注。为评估国家冰球联盟（NHL）中这种损伤的现状，我们分析了过去十个NHL赛季中脑震荡的发生率以及因脑震荡导致的缺赛时间。
数据来自对1997 - 98赛季至2007 - 08赛季NHL的两份不同体育媒体来源的损伤报告进行的全面审查。缺赛时间以每次脑震荡错过的比赛场次来衡量。
常规赛中报告的脑震荡发生率从1998 - 99赛季的1.81/1000运动员暴露人次的高位到2005 - 06赛季的1.04/1000运动员暴露人次的低位不等。在过去十年中，每个赛季报告的脑震荡数量呈下降趋势（p = 0.01）。然而，同期每次脑震荡的平均缺赛时间增加了（p < 0.0005）。前锋遭受脑震荡的比例过高（p < 0.0001）。
NHL中每个赛季报告的脑震荡数量近年来可能与减少损伤的努力有关，呈下降趋势。然而，脑震荡的发生率仍然很高，每次脑震荡的平均缺赛时间增加了。这可能反映出近年来损伤严重程度增加，或者是对现代管理指南的依从性提高，防止过早重返赛场。
