Using Random Sampling, the author measured the body heights and weights of 27,561 persons - 14,717 in males and 12,844 in females from metropolitan, urban and rural area between 6 to 29 years old - for the purpose of investigating the type and the actual condition of the Korean´s growth and development.
At first, on the basis of the results, the authors measured the growth and development, various kinds of physiques, nutritional index of 6 age group to 20s age group. Second, the fatness measured in direct method by physiques, third, the author presented the standard body weight of males and females by their body height, who were in the end of their growth (20-29 age group). Finally, the author compared chronological change of the Korean´s body heights and body weights with the results of other researchers.
1. Body Measurement
Rapid growth, in terms of body height, which is described by a straight line on a growth curve has been observed among males in the ages 6-13 and among females 6-14. That growth curve turned out to be slower among the people of higher ages by both sexes. The cross-over occurred in both sexes of 11-14 age. The highest growth rate for a year is at 13-16 aged males and 11-13 aged females. This indicates that females enter a rapidly growing stage 2 years earlier than males.
Rapid growth, in terms of body weight, which is described by a straight line on a growth curve has been observed among males is the ages 6-14 and among females 6-13. That growth curve turned out to be slower among the people of higher ages by both sexes. The cross-over occurred in both sexes 11.5-13.5 age. The highest growth rate for a year is at 13-16 aged males and 11-14 aged females. This indicates that females enter a rapidly growing stage 2 years earlier than males.
2.Barious Physiques and Nutritional index
Rapid growth, in terms of Relative Body weight Index, which is described by a straight line, has been observed among males in the ages 6-16 and females in the ages 6-14. The cross-over occurred in both sexes 12.5-14.5 age in the adolescencent period. Whereupon females outgrow males.
Roher Index displayed more good value in case of females than male and in the adolescent period, the level of fullness is lower than after the completion of development.
Kaup Indices of both sexes increase with age. The index is less than. 2.0 for males in 6-14 age group and for females in 6-13 age group and with this, it appeared that development of horizontal axis to long axis is poor. the index is more than 2.0 after 15 age group in males and 14 age group in females and developmental state has been good.
Body Mass Index is less than 20 for males 6-14 age group and for females in 6-13 age group. In the case of the higher age group, that index maintains a normal state.
3. The Fat Amount through the Method of Measurement of Physical Body
In 6 years of age, the amount of body fat of male was 2.177 ±1.336㎏ and that of female was 8.310 ±1.312㎏. The amount increased with age to reach made in 20-29 age group an average 9.841 ±3.392㎏ and for female 15.094 ±1.920. In 6 years of age, the body fat(㎏) of male was 10.55±6.88㎏ and that of female was 39.95 ±9.78㎏. The body fat(%) increased with age to reach for male 20-29 age group and average 14.49 ±2.87% 28.44 ±2.53% for female.
4. Average Body Height, Body Weight and Desirable Body Weight of Korean Youth(20-29 Age Group).
The average body weight and body height of full-grown Korean youth was 172.6 ±5.4㎝ and 66.4 ±9.4㎏ for male, 159.3 ±4.6㎝ and 53.3 ±6.9㎏ for females.
In the case of calculating Desirable Body Weight of Korean youth, correlation coefficient of r=＋0.384(P＜0.001) between body height and body weight was found a make group and r=＋0.380(P＜0.001) in a female group, from whihc respective linear regression equation of body weight and height was established for male and female as follows ;
Male : Y(Body Weight, ㎏) = 0.664 X (Body Height, ㎝)-48.13
Female : Y(Body Weight, ㎏) = 0.560 X (Body Height, ㎝)-36.01
5. Standard Body Weight Korean Adult by Age.
Using respective regression equations, standard body weight, overweight and underweight of the Korean Adult was established for each age group.
6. The Chronological Change on Mean Values of Body height and Body Weight in Korean Adult.
The Comparison with the mean values of body height and weight from 1910s to the present 1994 was been remarkably improved, and listed in .
㎏㎏㎏㎏
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