Self-estimation of ability among skiers and snowboarders in alpine skiing resorts
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Skiing ability is thought to be an important risk factor for injuries, but the best method to classify skiing ability is not known. The objective of this study was to validate five different questions designed to self-report skiing ability for ski injury surveillance. To this end 512 alpine skiers, Telemark skiers, snowboarders and skiboarders were asked to selfestimate their skiing ability using five different questions based on skiing skill, piste difficulty, turning technique, skiing experience and falling frequency, each with four categories. The participants then made a test run to test their skiing ability. Observed and self-reported skiing ability were compared using kappa statistics. The correlation between observed and self-reported skiing ability was low to fair, with kappa values of 0.34 for skiing skill), 0.33 for piste difficulty, 0.38 for turning technique, 0.26 for experience and 0.16 for falling frequency. However, the sensitivity and specificity for each of the questionnaires in discriminating between individuals in the poorest skiing ability category on the test and the rest of the group was relatively good (skiing skill: sensitivity 75%, specificity 91%; piste difficulty 68, 96%; turning technique 75, 91%; experience 75, 90%; falling frequency 61, 97%). The results show that the capacity to self-assess skiing ability is limited, but estimation based upon turning technique or skiing skill seem to be best methods for epidemiological studies on injuries in snow sports.
KeywordsSnow sport Alpine skiing Athletic injuries Risk factors Snowboarding
The Oslo Sports Trauma Research Center has been established at the Norwegian School Sport Sciences through generous grants from the Norwegian Eastern Health Corporate, the Royal Norwegian Ministry of Culture, the Norwegian Olympic Committee & Confederation of Sport, Norsk Tipping AS, and Pfizer AS. The study complies with the current laws of Norway.
- 1.Altman DG (1991) Some common problems in medical research. In: Altman DG (ed) Practical statistics for medical research. Chapman & Hall, London pp 403–439Google Scholar
- 4.Goulet C, Régnier G, Valois P, Ouellet G (2000) Injuries and risk taking in alpine skiing. In: Johnson RJ, Zukko P, Shealy JE (eds) Skiing trauma and safety: Thirteenth Volume. American Society for Testing and Materials, West Conshocken, pp 139–146Google Scholar
- 6.Hauser W. Experimental prospective skiing injury study (1989) Skiing Trauma and Safety: Seventh International Symposium. In: Johnson RJ, Mote Jr CD, Binet MH (eds) American Society for Testing and Materials, Philadelphia, pp 18–24Google Scholar
- 7.Lang TA, Secic S (1997) How to report statistics in medicine. American College of Physicians, PhiladelphiaGoogle Scholar
- 9.Laporte JD, Binet MH, Constans D (2000) Evolution of ACL ruptures in French ski resorts 1992–1999. In: Johnson RJ, Zukko P, Shealy JE (eds) Skiing trauma and safety: Thirteenth Volume. American Society for Testing and Materials, West Conshocken, pp 95–107Google Scholar
- 15.Shealy JE, Ettlinger CF (1996) Gender-related injury patterns in skiing. In: Mote Jr CD, Johnson RJ, Hauser W, Shaff PS (eds) Skiing trauma and safety: 10th Volume. American Society for Testing and Materials, West Conshocken, pp 45–57Google Scholar