International Journal of Epidemiology 2002;31:587-592
© International Epidemiological Association 2002
Special Theme: Injuries and Violence |
An ecologic study of protective equipment and injury in two contact sports
a Department of Epidemiology,
b Injury Prevention Research Center,
c Department of Emergency Medicine, University of North Carolina, Chapel Hill, USA.
d Sports Sciences, National Collegiate Athletic Association, Indianapolis, Indiana, USA.
e Injury Prevention Research Unit, University of Otago, Dunedin, New Zealand.
Stephen W Marshall, Department of Epidemiology, CB#7435, McGarvan-Greenberg Hall, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599–7435, USA. E-mail: SMarshall{at}Unc.Edu
Background Contact sports have high rates of injury. Protective equipment regulations are widely used as an intervention to reduce injury risk. The purpose of this study was to investigate the injury prevention effect of regulations governing protective equipment in two full-body contact sports.
Methods Injury rates in US collegiate football were compared to New Zealand club Rugby Union. Both sports involve significant body contact and have a high incidence of injury. Extensive body padding and hard-shell helmets are mandated in collegiate football but prohibited in Rugby Union.
Results The injury rate in football was approximately one-third the rugby rate (rate ratio [RR] = 0.35; 95% CI: 0.31–0.40). The head was the body site with the greatest differential in injury incidence (RR = 0.11; 95% CI: 0.08–0.16). Rugby players suffered numerous lacerations, abrasions, and contusions to the head region, but the incidence of these injuries in football was almost zero (RR = 0.01; 95% CI: 0.01–0.03). Injury rates were more similar for the knee (RR = 0.61; 95% CI: 0.43–0.87) and ankle (RR = 0.72; 95% CI: 0.46–1.13), two joints largely unprotected in both sports.
Conclusions The observed differences are consistent with the hypothesis that regulations mandating protective equipment reduce the incidence of injury, although important potential biases in exposure assessment cannot be excluded. Further research is needed into head protection for rugby players.
Keywords Sports injuries, protective devices, football, Rugby Union
Accepted 6 November 2001
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