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Stupid helmet question ...
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Ace wrote: On Wed, 17 Jan 2007 14:12:06 +0000, Alun Evans wrote: On Wed 17 Jan '07 at 12:38 Mike Clark wrote: Have any resorts collected data on proportions of skiers using helmets and also the proportions of skiers injured in accidents and whether or not they were wearing a helmet? I personally know two head trauma incidents (one with helmet, fine; other, unconscious), though they were both snow-boarders, which does seem to lend itself to head-plants. I've never worn a helmet for skiing or cycling, and am sceptical about their efficacy. I work on the basis that I've fallen loads of time, including head plants, and never damaged my head, so the sort of impact I'd like to protect against is much greater than those I've experienced. Unfortunately, in the case of massive impact, the level of protection provided by cycle and ski helmets is woefully inadequate, as far as I can tell, so I'll either wear a proper helmet, such as I use(d) for motorcycling, or not bother. Anyhoo, your sample size is clearly too small to draw conclusions from - I've personally witnessed dozens of ski and board accidents wear the head has made contact with sme other surface or object and never seen any major trauma - doesn't mean it doesn't happen, just that in all of the cases I've witnessed the wearing of a helmet would have provided no benefit. I don't want to turn this into a helmet-wars argument, such as used to come around periodically on the cycling newsgroups (probably still do, but I've not been active there for years). I would certainly never try to persuade anyone that they're not a good idea, as long as no-one tells me that I should wear one;-) I've now found a study published in JAMA (requires registration) http://jama.ama-assn.org/cgi/reprint/295/8/919 from a Norwegian study by Sulheim et al 2006 which makes for some interesting reading since they did attempt to look for confounding influences in their study. They concluded overall that helmets did provide protection, but their data also reveals other factors that were also associated with increased accident and injury rates. For example they found that for serious head injuries that snow boarders were more likely to be injured than alpine skiers who in turn were more likely to be injured than telemark skiers. Age and ability also seemed to be important in that teenage and also less experienced people were more likely to be injured. For example those aged 13-20 made up 25.6% of their control sample (randomly selected as every 10th person queuing at the bottom lift stations), but accounted for 42.2% of their severe head injuries. In contrast those over 20 (64.1%) accounted for 43.5% of severe head injuries. The other thing that the study threw up was that those who regarded themselves as risk takers were more likely to wear a helmet than those who regarded themselves as cautious skiers. Mike -- o/ \\ // |\ ,_ o Mike Clark \__,\\ // __o | \ / /\, "A mountain climbing, cycling, skiing, " || _`\,_ |__\ \ | immunology lecturer, antibody engineer and ` || (_)/ (_) | \corn computer user" |
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