身長発育速度曲線のパターンの検討 : 韓国青少年の縦断データによる

抄録

Twelve years of longitudinal data of standing height; ages from 6 to 17 years of Korean urban and rural schoolchildren (617 boys, 688 girls) who were born in 1963 were grouped according to their peak height velocity ages (PHV age) into 11 groups for boys and 8 groups for girls. Grand mean velocity and group mean velocity for each PHV age group were calculated. The velocity curves estimated from grand mean velocity were compared against those from group mean velocities, and patterns of group mean velocity curves were classified in terms of the characteristic of occurance of peak height velocity and the time difference between the onset of adolescent growth spurt and peak height velocity. General differences in patterns between grand mean velocity and group mean velocity curves were found in the following points; 1) amount of peak height velocity, 2) time difference between the onset of adolescent growth spurt and the occurance of peak height velocity, 3) appearance of double peaks in height velocity. Group mean velocity curves were classified into two patterns which were characterized by single peaked height velocity and double peaked height velocity, and four different patterns according to the time difference between the onset of adolescent growth spurt and the occurance of peak height velocity. It wad confirmed that the earlier occurnnce of peak height velocity is associated with a larger magnitude of the peak height gain and the amount of ado1escent growth spurt.