The study examined 559 concussions suffered by NHL players during the regular season games between 1997 and 2004. The typical time loss in days increased 2.25 for every recurrent concussion, according to the report.
The study also found players experiencing headache, low energy or fatigue, memory loss and abnormal neurological exams were significant predictors of loss of time among concussed players.
The NHL concussion rates per game also decreased from 7.7 concussions per 100 players in 2000-2001 to 4.9 per 100 players in 2003-2004.
Read the Science Daily news report on NHL concussions.
Read other coverage on concussions:
– Concussion Management: The 3-Pronged Approach
– NHL Concussion Prevention Rule 48 Prohibits Blindside Hits to the Head
– ImPACT Assessment Evaluates Cognitive, Physical Concussion Symptoms
