If you got hit with a paintball last year, you're on the cutting edge of sports trends. American Sports Data of Hartsdale, New York, surveyed 16,190 Americans (age 6+) last January for its Superstudy. Paintball, last measured in 1988, showed an 800 percent increase in participation over the past decade. ASD president Harvey Lauer says nearly 49 percent of last year's paintballers were first-year entrants. Thanks to the acceptance by the health club industry, artificial wall climbers and elliptical trainers also ranked high for first-timers. The more derivative, the better, it seems.