According to this article, Simmons Market Research, studied the number of people participating in martial arts in the US – this is what they found:
Somewhere around 18.1 million Americans participated in karate or some other form of martial art at least once in the past year. That includes 9.4 million adults, 5.5 million teenagers and 3.2 million kids.
5 percent of adults say they participated in martial arts last year at least once, and a quarter of those (28 percent) say they do martial arts “every chance they get.” This number is split split 52% men to 48% and women.
Adult age groups:
50 or older 11%
Asian American adults are no more likely to participate in martial arts than are whites; 5 % of each group is involved in the sport. Blacks are more likely than whites or Asians to engage in martial arts, with 7 % saying they have participated in the sport at least once in the past year.
25% of all teenage boys and 22% of teen girls say they have participated in martial arts in the past year.
75 % of teens who practice karate say that they have also played golf in the past year, 74 % have skateboarded, 69 % have practiced yoga, and 41 % have gone downhill or cross-country skiing.
Teens who spar are even more likely to see their activities as beneficial to their overall health and social life than do their equally active peers. 67 % of teens who practice martial arts say, “Sports are a part of my social life,” and 77 %, “Sports are important to keep healthy.” For those teens who participate in a sport other than karate, the figures are 59 % and 71 %, respectively.
13 % of children ages 6 to 11 have participated in some kind of martial arts activity in the past year. With kids,boys are significantly more interested than girls: 61 % are boys, and only 39 % are girls.
The likelihood that a child will partake in martial arts increases proportionately with the income of his or her parents. 15 % of kids whose parents earn $75,000 or more a year participate in martial arts, compared with 13 % of those whose parents make between $50,000 and $75,000. Only 10 % of kids whose parents earn $50,000 or less participate in the sport.
21 % of youngsters who practice martial arts agree with the statement “I like to be the first to try new things,” compared with just 16 % of kids who don’t participate in martial arts. 58 % of children who participate in martial arts say they want to be famous, compared with 52 % of kids who do not.
Adults who participate in martial arts are more likely than nonparticipants to say that they enjoy taking risks.
I find theses statistics interesting. I think the takeaway for me here is that kids who enjoy martial arts tend to be more outgoing, and enjoy physical activity.