The main objective of this study was to investigate the effects of physical self-efficacy of
adolescents who joined a school sports club on school violence bullying behaviors. For this purpose, the subjects in this study were 276 students in junior high schools and 154 students in high schools located in Cheonan-si and Gongju-si, Chungcheongnam-do in 2013. Questionnaires on physical self-efficacy factors used in studies by Moon Jin (2008), Seo Cha-Won (2012) and Park Yoon-Kee (2013) and on school violence bullying behavior factors by Do Gie-Bong (2007), Park Jae-Suk (2008), Kim Min-Jeong (2010) and Lee Se-Mi (2013) were used as a research tool with the addition of modification and supplement after verifying the suitability of the component content and items according to expert advice for the purposes of this study. The collected data were computerized using SPSS Statistics were analyzed by applying a descriptive statistical analysis, one-way ANOVA and multiple regression analysis for analytical purposes. The following results were obtained: First, this study examined differences in the physical self-efficacy according to the demographic characteristics. In gender, female students showed a significantly higher physical self-presentation confidence, a sub-factor of the physical self-efficacy, than male students. However, there was no significant difference in perceived physical ability, another sub-factor. In school level, the junior high schools showed higher perceived physical ability and physical self-presentation confidence than the high schools, but they were not statistically significant. Both in perceived physical ability and physical self-presentation confidence, the physical self-efficacy according to the type of sports club was high in individual, interpersonal and group exercises, in descending order, but they were not statistically significant. Both in perceived physical ability and physical self-presentation confidence, the physical self-efficacy according to the physical education grade was high in lower, middle and upper classes, in descending order, but they were not statistically significant. Second, this study examined differences in the school violence bullying behaviors according to the demographic characteristics. In gender, male students showed a higher harassment, verbal-psychological abuse, and bullying, sub-factors of the school violence bullying behaviors. In particular, there were significant differences in the verbal-psychological abuse. In school level, the high schools showed higher harassment and verbal-psychological abuse than the junior high schools as a difference in other school violence bullying behaviors, but they were not statistically significant. The junior high schools showed higher harassment than the high schools, but this was also not statistically significant. Both in the harassment and verbal-psychological abuse, the differences in the school violence bullying behaviors according to the type of sports club were high in individual, interpersonal and group exercises, in descending order, but all of them were not statistically significant. In the harassment, the differences in the school violence bullying behaviors were high in upper, lower and middle classes, in descending order. In the verbal-psychological abuse, the differences in the school violence bullying behaviors were high in middle class and showed the same value in upper and lower classes, but all of them were not statistically significant. Third, this study examined the effects of the adolescent physical self-efficacy on the school violence bullying behaviors. The results showed that the physical self-representation confidence a sub-factor of the physical self-efficacy had a statistically significant effect on the harassment verbal-psychological abuse and bullying. Although the perceived physical ability as another factor had a significant effect on the harassment verbal-psychological abuse and bullying, it was not statistically significant. Based on the above conclusions, the gender showed significant differences in the adolescent physical self-efficacy and school violence bullying behaviors, and the school violence bullying behaviors also increased in the proportion of the physical self-presentation confidence, a sub-factor of the physical self-efficacy. It is considered that this has caused an unexpected negative result the school violence bullying behaviors due to the absence of the system that students can positively release their passionate energy in the current school system. Therefore, it is considered that schools and related organizations should make efforts from various perspectives so that adolescent passion strength and energy from the physical self-efficacy can be released not in the school violence bullying behaviors but in healthy and desirable physical activities and sports participation as a method to reduce the school violence bullying behaviors of adolescent students with high physical self-efficacy.

• 이철화 | Lee, Chul-Hwa