<研究論文>保健体育教諭の子供の性比に関する研究

概要

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When we compare the number of males to females, we usually use the term "Sex Ratio" (=(the number of cases of males)/(the number of cases of females)×100). They think Sex Ratio at birth is a very stable figure, and it's said that Sex Ratio at birth in Japan is about 105.0±1.0. We investigated the Sex Ratio of children who were sons and daughters of teachers in the department of Physical Education at T-University. This result was 74.0 (37 : 50). So we thought that the Sex Ratio of children of sports players might be low. The purpose of this study is to investigate the Sex Ratio of children of health and physical education teachers in some high schools. We got 607 answers and analyzed those data. The results of this survey are as follows : 1) The Sex Ratio is low in children of health and physical education teachers in high schools. This tendency intensifies with on increase in live birth order. (There is no significant difference between this data and national statistics.) 2) Men who played individual sports in universities have more daughters than team sports players. (p<0.01) And the Sex Ratio is lower in children of the men who exercised harder in universities. (p<0.01) 3) Men who prefer "fish" have more daughters than those who prefer "meat" or "vegetables"