A Norwegian multicentre study of the winter 1985-1986, when 328 injure
d skiers were compared with a control population of 316 uninjured skie
rs, revealed a significantly lower injury risk for skiers on ungroomed
than for skiers on groomed slopes. Thirty-seven skiers were injured o
n ungroomed slopes, and skiers aged 15-29 years were at risk. The popu
lation of uninjured powder skiers was significantly younger than the u
ninjured skiers on groomed slopes. Beginners were significantly overre
presented among the injured powder skiers, but the skiing ability for
uninjured powder skiers was significantly higher than for uninjured sk
iers on groomed slopes. In conclusion, a lower injury risk was recorde
d for powder skiers than for skiers on groomed slopes, probably due to
a higher skiing ability of the powder skiers.