The popularity of skiing and snowboarding has increased tremendously over the past few decades. Whereas skiing has been an established winter sport for some time, snowboarding was created only in the 1960s. The great surge in popularity of snowboarding was sparked by its inclusion in the 1998 Winter Olympics. With increased participation in these winter activities has come a tremendous rise in ...

During the past five decades recreational alpine skiing has become increasingly safer. The numerous annual media reports on ski injuries have to be interpreted on the basis of the tremendous numbers of skiers. These favourable changes seem primarily be due to the introduction of short carving skis, more rigid and comfortable ski boots, the use of protective gear like helmets, and the optimized ...

This analysis identifies optimal areas for backcountry skiing in Maine using the following six parameters: elevation, distance to roads, average annual snowfall, aspect, slope, and population density. The most suitable areas correlated well with locations that were ski areas in the past, were once considered for ski area development, or are currently used for ski touring. Introduction The recre...

Abstract A recently proposed simple approximate theory of snow machining is applied to modelling several basic manoeuvres alpine skiing: fall-line side-slipping, traversing, and hockey stop. The results agree with the skiing practice explain abnormally high friction reported in previous field studies. They also prepare foundation for future rigorous testing theory, which will determine its accu...

Alpine skiing, both recreational and competitive, is associated with high rates of injury. Numerous studies have shown that occupational exposure to whole-body vibrations is strongly related to lower back pain and some suggest that, in particular, vibrations of lower frequencies could lead to overuse injuries of the back in connection with alpine ski racing. However, it is not yet known which f...

The ski rental problem arises from the following scenario. You want to start skiing, but you don’t own any skis. On each day you go skiing, you can either choose to rent skis for cost 1, or you can buy skis for cost s. Since you don’t know when you might get sick of skiing, (or when you might break your leg and be unable to ski again), the number of days d that you will end up skiing is unknown...

PATIENTS AND METHODS 140 patients with aortic dissection type A were admitted for cardiac surgery. Seventy-seven patients experienced their dissection in the winter season (from November to April). We analyzed cases of ascending aortic dissection associated with alpine skiing. RESULTS In 17 patients we found skiing-related aortic dissections. Skiers were taller (180 (172-200) cm versus 175 (1...