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KMID : 0379919820070010047
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Journal of The Korea Socity of Health Informatics and Statistics
1982 Volume.7 No. 1 p.47 ~ p.57
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A Study on Body Volume of Primary , Middle and High School Students in Jeiju Island .
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Abstract
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A study on 2,692 primary, middle and high school students (1328 boys and 1344 girls)
in rural areas of jeijuu Island was conducted from May 1 to May 30 in 1979 for assessing their physical growth and development in terms of physical indices, and the correlation between body weight and volume is obtained. Following are the results.
A. Physical Growth and Development.
Rapid growth of physical growth in terms of body height and weight has been observed among 15 year-old boys and girls. Growth in terms of physical growth and development turned out to be slower among students of higher ages, irrespective of male or female.
The maximum annual growth rates were as follows;
Body height; 7.73cm during the age 13-14 for boys.
r.59cm during the age 12-13 for girls.
Body weight; 5.02kg during the age 14-15 for boys.
4.83kg during the age 12-13 for girls.
This indicates that girls enter a rapidly growing stage one year earlier than boys of the body height.
ON the average girls were found to enter a rapidly growing stage two year earlier than the boys.
The greatest individual differences in growth and development were observed during 10-14 years of age.
The standards of growth of rescent Korean students show much improved than that of 1967.
B. Relative Body Weight.
The smallest values of relative body weight was obtained with both boys and girls aged 10 which was found to be increasing rather slowly there after with advancing ages. The crossing point of boys and girls appeared at age 10.5 at which girls surpassed boys and at 14.5 boys su passed girls.
The maximum annual growth rates of relative body weight were 3.22 from 13 to 14 years of age in boys and 2.33 from 13 to 14 years of age in girls.
C. Body Surface Area and Volume.
The mean value of the surface area and body volume was calculated by indirect method from body height and body weight. Rapid growth of surface area was shown in both sex during the period from 10 to 16 years of age.
The crossing point of boys and girls appeared at age 10.5 at which girls surpassed appeared at age 10.5 at which girls surpassed boys and at 14.5 boys surpassed girls.
The maximum annual growth rates of boy surface area were 0.1407m^2 from 13 to 14 years of age in boys and 0.1021m^2 from 12 to 13 years of age in girls.
This indicates that girls enter a rapidly growing stage one year earlier than boys of the suface area.
Rapid growth of the body volume was shown in both sex during the period 10-16 years of age. The crossing point of boys and girls appeared at age 10.5 at which girls surpassed boys and at 14.5, boys surpassed girls.
The maximum annual growth rates of body volume were 6.48ℓ from 13 to 14 years of age in boys and 4.65ℓ from 12 to 13 in girls.
D. Correlation between Relative Body Weight and Body Volume by Age.
The correlation coefficient and equation between body weight or relative body weight and body volume by age are as shown in Table 7 and 8.
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