성별에 따른 atd각도 차이와 손바닥 계측치의 관계
Relations of Atd Angles and Anthropometric Values of Palms according to Sex Distinction
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손바닥문은 생김새가 사람마다 다르고 평생 바뀌지 않는다. 손바닥의 atd각도는 손바닥문의 삼교차점에 의해 형성된 것으로, 남자의 손바닥이 여자의 손바닥보다 큼에도 불구하고 남자의 atd각도가 작다. 이에 본 연구는 atd각도와 손바닥 계측치의 관계를 성별에 따라 비교해봄으로써 atd각도의 성별 차이를 형태학적으로 규명해보고자 시도하였다. 연구대상은 대전∙충남지역 대학생 379명을 대상으로 하였으며, 남자 174명, 여자 205명이었다. 자료를 수집하기 위한 손바닥 계측은 양손의 atd각도, a-d거리, 먼쪽손목주름에서 점t까지 길이, 손바닥너비와 손바닥길이를 측정하였고, 자료 분석은 SPSS win PC 14.0으로 빈도분석, independent sample t-test, paired t-test, Pearson correlation analysis를 실시하였다. 손바닥의 atd각도는 남자 39.2°, 여자 40.5°로 남자가 여자보다 통계적으로 유의하게 작았으며, 손바닥너비는 남자가 더 넓고, 손바닥길이와 a-d거리는 남자가 더 멀었으나 먼쪽손목주름에서 점t까지 길이는 남녀차이가 없었다. 또한 손바닥너비: 손바닥길이 비율은 남자가 큰 것으로 나타났으나 먼쪽손목주름에서 점t까지 길이: 손바닥길이 비율과 a-d거리: 손바닥너비 비율은 남자가 더 작은 것으로 나타났다. 특히 남녀 모두 atd각도는 먼쪽손목주름에서 점t까지 길이: 손바닥길이 비율과 상관관계가 더 높은 것으로 나타났다. 따라서, 손바닥문의 삼교차점에 의해 형성된 atd각도에서 남자가 여자보다 유의하게 각도가 작은 이유는, 남자가 여자보다 손바닥길이에 비해 상대적으로 손바닥너비가 넓음에도 불구하고, 손바닥너비에 비해 상대적으로 a-d 거리가 가깝고, 손바닥길이에 비해 상대적으로 먼쪽손목주름에서 점t까지 길이가 짧기 때문이며, 그 중에서도 먼쪽손목주름에서 점t까지 길이: 손바닥길이 비율이 더 높은 영향을 미치는 것으로 사료된다.
Abstract
The palm prints are unique in each individual and permanent for a lifetime. The atd angle of palm is formed by triradii of palm prints. The aim of this study is to identify the reasons why males have smaller atd angles, even with larger palms than females have. This study was done on 379 individuals (males : 174 individuals, females : 205 individuals). Data were collected by measuring atd angles using a protractor, distance from triradii a to d, length from triradii t to the distal palmar crease (DPC), palm breadth at metacarpals and palm length perpendicular using digital callipers. The data were analyzed through the frequency, independent sample t-test, paired t-test, Pearson correlation analysis using SPSS win 14.0. This study showed that atd angles of 39.2° in males are significantly smaller than those of females (40.5°). Males’ were wider than females’ in palm breadth, palm length and distance from triradii a to d, however, there was no sexual difference in the length from triradii t to the DPC. In addition, the ratio of palm breadth to palm length was higher in males than in females, however, the ratio of the length from triradii t to the DPC to palm length, and the ratio of the distance from triradii a to d to palm breadth of males were lower than those of females. Especially, atd angles in males and females were more correlative with the ratio of the length from triradii t to the DPC to palm length. The results of this study suggest that the differences in the atd angles between males and females arise from the ratio of length from triradii t to the DPC to palm length and the ratio of distance from triradii a to d to palm breadth. In both of the cases, males exhibited lower ratios than females. Especially, the ratio of the length from triradii t to DPC to palm length affected more to the atd angle than any other ratios.
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