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Heavy snow areas account for about 50% of the total land area of Japan. Extension of healthy life expectancy is an important issue for residents of heavy snow areas because most of these areas in Japan are depopulated areas. Skiing is a possible lifelong sport in heavy snow areas because gravity rather than muscular power is mainly utilized in skiing. However, in Japan, the number of skiers has declined to 30% of the peak number. This study was conducted with the aim of recovery of the popularity of skiing, and establishing skiing as lifelong winter sport. World-level success of Japanese alpine ski racers is an important factor for the recovery of the popularity of skiing. In this study, the skill of an alpine ski racer was investigated by using a 3D CAD model of a skier with focus on joint work and energy balance in the turn motion.

Analysis of the skill of a world-class alpine ski racer by using a 3D CAD system