운동 참여도에 따른 정신 건강의 효과 비교

다국어 초록 (Multilingual Abstract)

The purpose of this study is: (1) to testify the significant differences of body composition factors depending on sex and age; and (2) to investigate the correlation, if any, of the two different methods used for the research. The two methods are STM(the skinfold thickness method) and BIA(the bioelectrical impedance analysis), the most popular techniques currently used in the field. The representative sample group consists of 172 middle school students and 210 high school students, who live in Seoul and whose age distribution covers from thirteen to eighteen. The research based its comparison and analysis on the basic physical constitution factors, percent body fat, body fat mass, and fat free mass, and yielded the following results: First, the height and weight of the sample group increased in proportion to their ages, regardless of sex. Second, in case of the body fat mass, the average rate of the female sample group was higher than that of the male ones, and increased moderately in proportion to age. Both of the methods produced the significant differences depending on age and sex(p<.05). Third, the female sample group contained more body fat mass than the male counterpart, and the body fat mass increased in proportion to age. Both of the methods produced the significant differences depending on age and sex(p<.05). Fourth, the male sample group contained more fat free mass than the female counterpart. The fat free mass increased in proportion to age, and that conspicuously in case of the male sample group. Both of the methods produced the significant differences depending on age and sex(p <.05). Fifth, the outcome of the percent body fat, body fat mass, and fat free mass, resulted from STM and BIA proved distinct correlation between the two methods(r=.86,.90,.95). In sum, adolescence is the most prominent period in terms of the physical maturation and hormone secretion. The period experiences the remarkable shift in the physical constitution and articulates distinct differences of the body composition factors. Accordingly, the period deserves critical attention and requires systematic analysis and evaluation. The two methods have legitimated their usage as reliable techniques, with the visible presence of a substantial body of work engaged with the techniques. My study is designed to be part of the attempt to articulate their credibility as a set of techniques in analyzing and evaluating the body composition factors.