Abstract: Longigudinal research on height growth was carried out in Beijing , China. There were 109 boys and girls in the group. The height growth had been followed from their age of 6— 7 through 18 ( for 12 years). The central and dispersion trend of height velocity by age was reported; indices on growth velocity were listed: age at take-off ( TOA) ( boy s 10. 73± 1. 12 y ea rs, girls 9. 00± 1. 18 years) , velocity at take-off ( TOV) ( boys 4. 51± 0. 65 cm /year, girls 4. 95± 0. 79 cm /year) , age at peak height velocity ( PHA) ( boys 13. 07 ± 1. 08 y ea rs, girls 11. 32± 1. 32 years) , peak height velocity ( PHV) ( boys 10. 01± 1. 59cm /year, girls 8. 13± 1. 03 cm /year) , and age at endpoint ( EA) ( bo ys 16. 18± 1. 02 y ea rs, girls 13. 96± 1. 09 yea rs) . Correlation between final height and indices on growth velocity in the group was analyzed. It was a middle degree correlation between final height and the height at take-off age, and the peak age too. Final height significantly correlated with the height at endpoint age. The results of this study were also compared with research data from other sources.

Key words: Child, Height, Growth velocity , Longitudinal study