Evaluation
The participants for this study were all located in the metropolitan area of Seoul,
South Korea. In total there were 159 (148 males, 11 females) participants from six Jiu Jitsuacademies in Seoul. All six academies are focused completely on teaching Jiu Jitsu, none offer other martial arts. From the six schools where the survey was handed out, there was an overall participation rate of 30.57%. Nearly all of the participants were between the ages of 18 and 45 years old (96.77%), with 56.61% being in the 18-30 range. Even though the survey was conducted in South Korea, foreigners accounted for 19.9% of the participants. The majority were single (71.35%) and without children (77.96%), but 22.04% of the participants had at least one child. The two largest annual income categories were under $9,999 (34.78%) and $35,000-49,999 (20.11%). No single occupation was dominate among the participants, with students and office workers being the highest two with 28.65% and 18.92% respectively. Almost half of the participants were university graduates (46.77%)