In this study, we used the 3D simulation program to create bodice patterns for adolescents boy students and analyze the fitting and air gap through 3D simulation. The purpose of this study was to select the bodice pattern method that best suited the body shapes of the adolescents male students. The subjects of this study were the French E pattern, Japanese N pattern, and Korean industrial L and J patterns. The applied size was the sixth Korean human body size survey data of 2010 Korea. The age range of the subjects was 13-18 years. DC Suite Program Ver. 5.1 was used, and SPSS 23.0 program was used for data analysis. As a result of comparing the shapes of the bodice patterns in the 3D simulation program, the E pattern had two waist darts on the front and one shoulder dart and one waist dart on the back, and the J and L patterns only had one dart on the back. The N pattern had no darts on either the front or back. As a result of examining the appearance evaluation of the pattern, air gap, color distribution, and clothing cross-section, the E pattern was evaluated as the closest to the body, and the N pattern was evaluated as the pattern with the largest allowance. The J pattern was evaluated as the best fit for body shape of the male adolescents. However, it is necessary to develop a pattern system by adding extra ease in setting the center front length.

The purpose of this study was specifically focused on the lower garment sizing system of adolescent apparel, especially on trousers for adolescent boys. Research Method was performed by using the physical measurements of adolescent boys (14～19 years old, n=1,344) based on the ‘he fifth Korean national physical standard reports’ surveyed by SIZEKOREA. The basic materials for this study are obtained from the observations of physical characteristics and classification of physical figures based on the characteristics from waist down. The results from this study are as follows. 1) according to the analyses of physical changes, most items including height, circumference, length, breadth and depth were increased at the age of 14～18 and gradually reduced at the age of 19. 2) The factors which compose the lower body resulted were appeared that the first factor was vertical factor, the second factor was horizontal factor, the third factor was hip length, and the last factor was buttlock-popliteal length. 3) Formalization of physical figures for adolescent boy's lower body analyzed from factors grouped three types. 4) The basic parts that we used to propose the apparel sizing system distinguished by physical figures were Waist Circumference (Omphalion) (every 3cm regular gap) and Hip Circumference (irregular gap). Physical figures assigned 5 to Type T, and 4 to type M. The reference measurement items were divided into 7 items which are correlated with apparel manufacture.