The relationship between ACL injuries and physical fitness in young competitive ski racers: a 10-year longitudinal study
- 11 September 2012
- journal article
- research article
- Published by BMJ in British Journal of Sports Medicine
- Vol. 46 (15), 1065-1071
- https://doi.org/10.1136/bjsports-2012-091050
Abstract
Background Epidemiological studies have shown a high incidence of anterior cruciate ligament (ACL) injuries among competitive alpine skiers. Little is known regarding modifiable risk factors in young skiers. There are still uncertainties in gender-related risk factors. Objective The purpose of this study was to determine the relationship between ACL injuries and internal risk factors. Methods Retrospective data analyses were performed based on a group of 175 female and 195 male alpine ski racers between the ages of 14 and 19 years. The athletes underwent physical testing annually from 1996 to 2006. Z score transformations normalised the age groups. Multivariate binary logistic regressions were calculated for men and women separately to detect significant predictors of ACL ruptures. t Tests were computed to reveal the differences in test scores between injured and non-injured athletes. Results A total of 57 (15%) ACL injuries occurred. The female−male risk ratio (RR) was higher in females (2.3, 95% CI 1.3 to 4.2). Z scores for relative leg force, ratio of absolute core flexion to extension force, relative core strength and reactive strength index were predictive variables for men. Z scores of all of these predictive variables except relative leg force were higher in the non-injured group. The ratios of absolute flexion to extension force and absolute core strength were predictive covariates for women. Z scores for absolute core strength were higher in the non-injured group. Conclusions The risk of ACL injury was greater in female athletes. The findings suggest that core strength is a predominant critical factor for ACL injuries in young ski racers.Keywords
This publication has 34 references indexed in Scilit:
- Sports injuries and illnesses during the Winter Olympic Games 2010British Journal of Sports Medicine, 2010
- More data needed on injury risk among young elite athletesBritish Journal of Sports Medicine, 2010
- COMMENTARY: Time for a Paradigm Shift in Conceptualizing Risk Factors in Sports Injury ResearchJournal of Athletic Training, 2010
- Injuries among male and female World Cup alpine skiersBritish Journal of Sports Medicine, 2009
- The Incidence of Anterior Cruciate Ligament Injuries among Competitive Alpine SkiersThe American Journal of Sports Medicine, 2007
- MRI of Snow Skiing and Snowboarding InjuriesSeminars in Musculoskeletal Radiology, 2005
- Understanding injury mechanisms: a key component of preventing injuries in sportBritish Journal of Sports Medicine, 2005
- Effect of trail design and grooming on the incidence of injuries at alpine ski areasBritish Journal of Sports Medicine, 2004
- Alpine Ski Injuries and Their PreventionSports Medicine, 2002
- A 7‐year study on risks and costs of knee injuries in male and female youth participants in 12 sportsScandinavian Journal of Medicine & Science in Sports, 2000