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Growth and normal puberty

V Abbassi1

  • 1Department of Pediatric Endocrinology and Metabolism, Georgetown University Children's Medical Center, Washington, DC 20007-2197, USA.

Pediatrics
|August 1, 1998
PubMed
Summary

Puberty significantly impacts final height in both boys and girls, with growth spurts occurring earlier in girls. The timing of this pubertal growth influences its duration but not final adult height.

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Area of Science:

  • Pediatric Endocrinology
  • Human Growth and Development
  • Biostatistics

Background:

  • Understanding typical growth patterns during puberty is crucial for identifying deviations and potential health concerns.
  • Previous research has established general timelines for pubertal development, but detailed analysis of specific growth characteristics across populations is ongoing.

Purpose of the Study:

  • To comprehensively review and analyze the growth characteristics of American boys and girls during puberty.
  • To quantify key metrics including age at takeoff, peak height velocity, and the contribution of pubertal growth to final adult height.

Main Methods:

  • Systematic review of published studies on American children's growth characteristics.
  • Analysis of data including age at takeoff, age at peak height velocity, peak height velocity (PHV), duration of puberty, and pubertal contribution to adult height.

Main Results:

  • Age at takeoff is variable and sex-dependent (approx. 11 years for boys, 9 years for girls).
  • Peak height velocity (PHV) occurs around 13.5 years for boys and 11.5 years for girls, with mean PHV of 9.5 cm/y (boys) and 8.3 cm/y (girls).
  • Pubertal growth contributes 17-18% to final height (approx. 30-31 cm for boys, 27.5-29 cm for girls); magnitude of pubertal growth negatively correlates with age at takeoff but not final height.

Conclusions:

  • Pubertal growth significantly contributes to final adult height, with distinct timing and velocity differences between sexes.
  • Age at takeoff is a key factor influencing pubertal duration and is strongly correlated with pubertal stage.
  • While timing and duration vary, the overall contribution of pubertal growth to final height shows a consistent pattern across studies.

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