For the purpose of estimating the status of physical growth of primary school students in Busan area, the author had performed an investigation and analysis on the physical inter grated value for past 6 years of random sampled 656 students (male 374, female 282).
The summarized results were as follows :
1. The most rapid growth age of body height was 7-8 years old as 5.9 cm in male and 10-11 years old in female as 6.5 cm, and the growth curve of body-height was crossed at 10-11 years old.
2. The most rapid growth age of body-weight was 9-10 years olds; as 3.1 kg in male and 10-11 years old in female as 3,9 kg, and the growth curve of body-weight was crossed at 10-11 years old.
3. The most rapid growth age of chest-girth was 8-9 years old as 311 cm in male and 9-10 years old in female as 2.9 cm, and the growth curve of chest-girth was not copsed.
4. The most rapid growth age of sitting height was 6-7 years old in both sex as 3.3 cm and 3.4 cm, and the growth curve of sitting-height was crossed at 8-9 years old.
5. Using the physical integrated value was much simple and desirable at comparing with the areas. And the physical integrated value of primary school students on Busan area compared to Korean standard physical status was relatively good !,as body height + 0.33, + 0.30, body-weight + 0.33, + 0.35, chest-girth + 0.65, + 0.57 and sitting height + 0.10, + 0.20 with each sex.
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