其他摘要:The purpose of this study was to classify the growth pattern and to clarify the variation of the pattern between both sexes by the relative growth in height and weight, upon investigating boys and girls in 1952〜60. The materials used for this study were the longitudinal data of the height and weight from 6 to 14 years old in 61 boys and 78 girls. The method was as follows; nine age points from 6 to 14 years old were plotted for every boy and girl by the longitudinal recordings in the height and weight on the figure, in which the weight was represented on the abscissa and the height on the ordinate in logarithms, respectively. Some proper straight lines of allometry were drawn by passing through more than three age points on the individual figure. The growth patterns were classified based on the number of phase and the relationship between two or three slopes (a). The equation of average allometry for each pattern was computed from the "reduced major axis" on a double logarithmic diagram. The discrimination between "monophasic allometry" and "polyphasic allometry" was based on application of the significance test for the difference of slopes and positions between the reduced major axes of different growth stages. The sexual difference of the equation of average allometry could be well based on the significance test for the difference of slopes, positions and co-ordinates at the critical point of reduced major axes in each pattern. The results obtained were as follows; 1)The relative growth of 58 boys and 67 girls from 6 to 14 years old could be classified into 3 patterns (designated as uniphasic, diphasic and triphasic patterns). 2)The sexual difference of relative growth coefficient was not significant in uniphasic pattern. 3)The Sexual difference of relative growth coefficients at both growth stages were not significant in diphasic pattern , but the change towards the second growth stage occured at a lower stature in girls. Comparison between diphasic pattern in boys and diphasic pattern in girls relates that the relative growth coefficient showed superiority of the girls' to the boys' at the second growth stage. And, a rapid increase of the relative growth coefficient occured at a higher stature in girls' . 4)When the samples were classified into triphasic pattern according to their relative growth in weight / height, it was found that the relative growth coefficient showed 2.458 in boys' triphasic pattern (a_1 > a_2, a_2 < a_3) and 1.919 in girls' triphasic pattern (a_1 < a_2