12주간 복합운동이 여중생의 신체조성, 혈중지질 및 코티졸에 미치는 영향 = Effects of 12-week Combined Exercise on Body Composition, Blood Lipid Profiles and Cortisol of Middle School Aged Girls

다국어 초록 (Multilingual Abstract)

The purpose of this study is to find out the effect of the combined exercise program on body composition, blood lipid, and cortisol of middle school aged girls. Twenty girls in their middle school were classified into exercise groups (10 students) and control groups (10 students). Combined exercise programs were conducted with the intensity of 50-60% HRR (RPE11-13) during week 1 to 6 and 60-70% HRR (RPE13-15) during week 7 to 12. The progress was measured twice before and after the experiment to calculate the average value (M) and standard deviation(SD). The changes after the experiment in the identical group were measured through paired t-test and the difference between groups were measured through independent t-test. The repeated measure ANOVA was used to find out interactive reactions between groups or between period. All statical significance level was set to (α)=.05. As a result, exercise groups saw interactive reactions in SMM, TG, HDL-C, and LDL-C. It turned out that combination of aerobic exercise and resistance exercise reduced the body fat and repeated muscle strength exercise and muscular endurance exercises both brought positive changes. Accordingly, it is believed that 12 weeks of combined exercises resulted in positive impact on the body composition, blood lipid, and cortisol as well as enhancing health among middle school aged girls.