韓国人中学生の身体組成と体力との関係構図における発育学的検証

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Few reports have been examined the correlation between body composition and physical fitness during adolescence, especially, in South Korea. In the present study, the relational construction among physique, body composition and physical fitness is auxologically confirmed in South Korean junior high school students. The sample size consists of 416 South Korean junior high school students aged 13 years(boys:232;girls:184). Height, weight, body mass index(BMI), body fat mass, body fat percentage, and soft lean mass(SLM)were measured along with physical fitness tests(sit & reach, 20 m-shuttle run, push-ups and sit-ups). In the correlation analysis between height and physical fitness, a positive correlation was shown only for the relationship between height and the 20 m-shuttle run in boys. Multiple correlation analysis between physique and physical fitness showed a positive correlation in all items except sit & reach in boys. A negative correlation was shown for the relationship between both the 20 m-shuttle run and sit-ups and body fat mass, body fat percentage and BMI, respectively, in both boys and girls. Moreover, significant differences were seen in physical fitness between the“slim type,"“normal type"and“fatty type"classified by BMI. Next, a regression polynomial evaluation chart of fat percentage for BMI was constructed in order to verify physical fitness by the difference of morphological quality. Physical fitness was examined based on difference in the degree of qualitative accumulation of fat(excessive development of fat, normal fat, excessive underdevelopment of fat)derived from the evaluation chart. Students with excessive development of fat had significantly poorer and those with excessive underdevelopment of fat had significantly better endurance ability in the normal and fatty type. There was a difference in physical fitness based on the difference in the degree of qualitative accumulation of fat. However, the difference between the degree of qualitative accumulation of fat and physical fitness in the slim type was not significant. This suggests that fat was a negative factor for endurance ability and that degree of qualitative accumulation of fat had less influence on physical fitness in the slim type based on the fatty-slim level determined by BMI.

韓国人中学生の身体組成と体力との関係構図における発育学的検証

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