On the Differences of Growth, Ability for Physical Fitness and Mental Faculties among the Same Year Class Pupils in Primary and Middle Schools

Abstract

The correlations between the level of bodily growth (height, body weight and breast girth) on the one hand and the athletic ability (running, jumping, throwing and horizontal bar exercise) and the intelligence quotient on the other was studied with the primary and middle school children in Sendai as subjects. The subjects were divided into the groups of large, middle and small by bodily growth and the athletic ability and the athletic ability and the I.Q. were observed in comparison. The correlation coefficients bodily growth versus athletic ability and intelligence quotient were computed and by means of partial correlation, the first order coefficient was obtained by eliminating the age factor from the former coefficient. The second order coefficients were ; also obtained from the correlation between the height and the athletic ability by eliminating the factor of body weight, from the correlations between the body weight, the breast girth and the athletic ability by eliminating the factor of height and a comparative study was conducted on these correlations.In a very rough evaluation, I may conclude that of the children born in the same - month of the same year, the better developed in body usually have stronger athletic ability and higher intelligence quotient, but this tendency seems to diminish as the bodily growth nears summation.The ability of taking exercies suspended from horizontal bar is particularly heavily -affected by the difference in body weight, especially among girls.