Relative to the age-42 peak, estimated pace for freestyle males was 6.5% slower at age 20, 4.6% slower at age 30, 0.2% slower at age 40, 2.5% slower at age 50, 12.2% slower at age 60, 30.2% slower at age 70, and 43.4% slower at age 75.
Relative to their age-43 peak, freestyle females were 8.0% slower at age 20, 5.0% slower at 30, 0.1% slower at 40, 1.7% slower at 50, 9.2% slower at 60, 29.1% slower at 70, and 47.7% slower at 75.
Freestyle skiers had earlier peak ages than classic skiers. They also had a greater % reduction in pace as they aged. In other words, age had a greater (negative) effect on freestyle performance than classic, particularly as skiers approached their 70s and on.
For males in the classic event, the fastest modeled pace occurred at age 46. Relative to that reference age, pace was 4.7% slower at age 20, 6.1% slower at 30, 1.5% slower at 40, 0.7% slower at 50, 7.5% slower at 60, 22.4% slower at 70, and 35.4% slower at 75.
For females in the classic event, the fastest modeled pace occurred at age 44. Relative to that reference age, paces at ages 20, 30, 40, 50, 60, 70, and 75 were 12.5%, 6.3%, 0.6%, 0.9%, 6.5%, 18.7%, and 28.7% slower, respectively.
The peak age for classic skiers was older than that for freestyle , and the % reduction in performance after skiers reached peak age was less for classic than freestyle skiers.