초등학생의 손가락 길이 비율(2D:4D ratio)에 따른 체격 및 체력요인 비교
A Comparison with the Physique and Physical Fitness Factors according to Finger Length Ratio(2D:4D ratio) of Elementary Students
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PURPOSE: The purpose of this study is to investigate if the second to fourth finger length ratio(2D:4D ratio) can be used as a factor to predict elementary student’s athletic ability. METHODS: With the participation of 371 elementary students (223 male, 148 female), X-ray images of their hands were taken for the analysis of the length from the midpoint between the distal end of the metacarpal bone and the proximal end of the proximal phalanges to the tip of the finger. As for group classification, students were divided into three groups: Low group for those less than 25%; Medium group for those between 25 and 75%; and High group for those above 75%. RESULTS: It was found that 2D:4D ratio of male students were statistically significantly lower than that of female students. As for physique factors according to 2D:4D ratio by grade and gender, statistically significant difference was found in the height of fourth grade female students. Among other groups, no other items indicated difference in physique factor. In addition, as for physical factors, statistically significant difference was not found in any group or item. Lastly, it was found that there is no correlation between 2D:4D ratio and physical factors. CONCLUSIONS: In conclusion, 2D:4D was found of which reliability was low as predictors of elementary student's physique and physical fitness factors. Consequently, it is considered that further studies will be required for whether the innate 2D:4D ratio and sex hormone can be changed through longitudinal study.
Abstract
PURPOSE: The purpose of this study is to investigate if the second to fourth finger length ratio(2D:4D ratio) can be used as a factor to predict elementary student’s athletic ability. METHODS: With the participation of 371 elementary students (223 male, 148 female), X-ray images of their hands were taken for the analysis of the length from the midpoint between the distal end of the metacarpal bone and the proximal end of the proximal phalanges to the tip of the finger. As for group classification, students were divided into three groups: Low group for those less than 25%; Medium group for those between 25 and 75%; and High group for those above 75%. RESULTS: It was found that 2D:4D ratio of male students were statistically significantly lower than that of female students. As for physique factors according to 2D:4D ratio by grade and gender, statistically significant difference was found in the height of fourth grade female students. Among other groups, no other items indicated difference in physique factor. In addition, as for physical factors, statistically significant difference was not found in any group or item. Lastly, it was found that there is no correlation between 2D:4D ratio and physical factors. CONCLUSIONS: In conclusion, 2D:4D was found of which reliability was low as predictors of elementary student's physique and physical fitness factors. Consequently, it is considered that further studies will be required for whether the innate 2D:4D ratio and sex hormone can be changed through longitudinal study.
참고문헌 (30)
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