The sport of cross-country skiing has always been preoccupied with its skis and waxing. Research now demonstrates that to shave off those extra hundredths of a second, competitive skiers should pay more attention to their clothing.
Research at SINTEF shows that what you wear is closely linked to per-formance. If skiers wearing modern competition skiwear want to achieve peak performance, the temperature around their bodies should be between +1 and -4 degrees. Colder or warmer than this and the time taken before they become exhausted is reduced, and performance suffers.