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박지혜 ( Ji-hey Park ),김경래 ( Kyeong-lae Kim ),서영민 ( Yung-min Seo ) 한국리듬운동학회 2021 한국리듬운동학회지 Vol.14 No.2
The purpose of this study is to confirm the effect of 12-week cheerleading on the physical fitness and bone mineral density in middle school girls. In order to achieve the purpose of this study, 42 female students from H middle school were selected and 21 students were randomly assigned to each of the exercise group and the control group, measured the physical fitness, body composition and bone mineral density before and after conducted cheerleading activity of 45 minutes 3 times a week for 12 weeks. The data obtained in this study were analyzed using the SPSS 21.0 statistical program, and paired sample t-test was performed to confirm the within-group difference, and independent sample t-test was performed to confirm the difference between groups after the experiment. The results were as follows; First, the change in physical strength within the group showed significant differences in strength, muscular endurance, cardiorespiratory endurance, flexibility, and agility only in the exercise group, muscular endurance, cardiorespiratory endurance, flexibility, quickness, agility, and coordination were significantly different between groups. Second, the body composition showed a difference in body fat percentage in the exercise group, no significant difference between groups. Third, the bone mineral density showed the significant difference due to the improved average bone mineral density, showed no difference between groups.
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