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744 The incidence of physical contacts in youth ice hockey associated with body checking experience
  1. Leticia Janzen1,
  2. German Martinez1,
  3. Maciek Krolikowski1,
  4. Nicole Romanow1,
  5. Luz Palacios-Derflingher1,
  6. Luc Nadeau2,
  7. Carolyn Emery1
  1. 1Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Canada
  2. 2Department of Physical Education, Faculty of Education, Laval University, Québec, Canada

Abstract

Background Hockey Canada’s 2013 body checking (BC) policy change was informed by evidence that BC leads to a >3-fold increased risk of injury compared with non-BC leagues. Video analyses found a reduction in high intensity physical contacts (PC) following this policy change. The association between BC experience and incidence of PCs has not been examined. As such, the incidence of intensity and types of PC were examined following the policy change in Pee Wee (PW) leagues (ages 11–12) with (Calgary) and without (Québec) BC experience.

Methods PW games were videotaped in Calgary (N = 21, with BC experience) and Québec City (N = 20, without BC experience), both non-BC leagues. Games were analysed using Dartfish with a validated observation system to quantify incidence of PC. Five levels of intensity (trunk contacts coded Level 1–5 intensity) and other types of PC (limb/head/stick). PC incidence rates per team-game and incidence rate ratios (IRR) (95% CI) were estimated to compare games between two cohorts.

Results In total 4433 trunk contacts in Calgary and 2667 in Québec were recorded. Of the trunk contacts, 97.5% (Calgary) and 95.7% (Québec) were classified as low level PC. The incidence of total trunk contacts (number of contacts per team-game) was higher in Calgary than Québec (IRR = 1.58, 95% CI: 1.40–1.79). There was no difference in high intensity contacts (Level 4 [IRR = 0.72 95% CI: 0.48–1.07], Level 5 [IRR = 1.21, 95% CI: 0.57–2.56]). The incidence of other PCs was lower in Calgary than Québec (IRR = 0.71, 95% CI: 0.53–0.96).

Conclusion Following a policy change disallowing BC, PW players with experience BC had a greater incidence of total trunk contacts but not greater high intensity contacts than players without BC experience. Players with no experience had a higher incidence of other PCs. These results inform a greater understanding of mechanisms of contact in youth ice hockey that will in turn inform injury prevention and player development.

  • concussion
  • body checking
  • policy
  • injury

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