제8차 Size Korea 인체 형상으로부터 추출한 측정값을 이용한 20~69세 여성의 상반신 체형 유형화 및 연령에 따른 체형 변화 분석 = Classification of Upper-Body Shapes and Analysis of Their Changes with Age in Women Aged 20–69 Using the 8th Size Korea Scan Data

다국어 초록 (Multilingual Abstract)

This study aimed to analyze and classify the upper body shapes of Korean women aged 20–69 using 3D body scan data from the 8th Size Korea Survey, and to identify age-related variations in body morphology to provide foundational data for clothing pattern construction. Principal component analysis extracted seven key shape factors: the acromial position (PC1), body size (PC2), neck inclination (PC3), upper body slope (PC4), body length (PC5), back neck position (PC6), and shoulder slope (PC7). A cluster analysis based on these components identified four types of upper-body shapes. Shape 1 (20.2%) represented the most full-bodied type, characterized by a forward neck and shoulder inclination, and a small shoulder slope. Shape 2 was the leanest type, with a backward upper body inclination, whereas Shape 3 exhibited a longer upper body, the greatest neck inclination, and gently sloped, backward-oriented shoulders. Shape 4 (24.0%) exhibited a moderately full-body with a nearly vertical posture, the smallest neck inclination, and forward-oriented shoulders. Age-related variations in body shape were evident: women aged 20–34 mainly belonged to Shapes 2 and 4; those aged 35–59 to Shape 3, increasingly moving toward Shape 1; and women aged 60 and older predominantly belonged to Shape 1 with partial retention of Shape 3. With advancing age, the acromial position shifted posteriorly, body size increased, and shoulder slope altered, with midlife flattening, in line with increasing age. Increases in body size-related central trunk measures indicate progression toward abdominal obesity.