We conducted a prospective cohort study from 1993 to 1997 to determine the
frequency and severity of injury in men's Canada West university football.
The Canadian Intercollegiate Sport Injury Registry was used to document bas
eline preseason data, daily athlete participation, and subsequent injury fr
om five varsity football teams. An injury was defined as "any injury result
ing in one or more complete or partial sessions of time loss" or "any concu
ssion or transient neck neurologic injury." The annual proportion of injure
d athletes ranged from 53.5% to 60.4%, with a 5-year total of 1811 injuries
. Regression analysis indicated that the rate of nonconcussion, nonneck neu
rologic injuries increased. Concussion (N = 110), hamstring strain (N = 88)
, and brachial plexus (N = 84) injuries were the most common, specific inju
ry diagnoses. Knee injuries resulted in the highest rate of severe (greater
than or equal to 7 sessions of time loss) injury and resulted in the most
time loss (3350.5 sessions). Ligament sprains and muscle strains and spasms
accounted for approximately half of all injury diagnoses. A total of 1173
injuries (65%) were related to contact between players or between players a
nd other obstacles. Future studies should be conducted to identify risk fac
tors for the ultimate purpose of implementing injury prevention strategies.