Growth and normal puberty.
National Cooperative Growth Study Annual Investigators Meeting. Washington, DC, USA, 1997/09/25.
We reviewed the growth characteristics of American boys and girls from published studies, including age at takeoff, age at peak height velocity, peak height velocity, duration of puberty, and the magnitude of the pubertal contribution to adult height.
Age at take-off is highly variable and sex-dependent.
The mean take-off age in children growing at an average rate is ~11 years in boys and 9 years in girls, and peak height velocity occurs at a mean age of 13.5 years and 11.5 years, respectively, in these children.
Whole-year peak height velocity is 9.5 cm/y in boys and 8.3 cm/y in girls, with slight variations in the different studies.
The contribution of pubertal growth to final height is ~30 to 31 cm in boys, accounting for 17% to 18% of the final height, and 27.5 to 29 cm in girls, accounting for 17% of the final height.
The magnitude of pubertal growth has a negative correlation with age at takeoff, but no correlation with final height.
Age at takeoff, however, correlates highly with pubertal stage, but correlates negatively with duration of puberty.
Mots-clés Pascal : Puberté, Normal, Développement staturopondéral, Etats Unis, Amérique du Nord, Amérique, Taille corporelle, Vitesse, Age, Evaluation, Etude statistique, Enfant, Homme, Mâle, Femelle, Sexe
Mots-clés Pascal anglais : Puberty, Normal, Somatic growth, United States, North America, America, Body size, Velocity, Age, Evaluation, Statistical study, Child, Human, Male, Female, Sex
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Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0490119
Code Inist : 002B30A01C. Création : 19/02/1999.