Secular Trends in Pubertal Growth Acceleration in Swedish Boys Born From 1947 to 1996.

ABSTRACT:

Importance

A secular trend for earlier menarcheal age has been established in girls but there are few studies of pubertal timing for boys.

Objective

To determine if there is a secular trend for earlier pubertal timing among boys.

Design, setting, and participants

For this population-based retrospective cohort study conducted in Gothenburg, Sweden, we collected heights and weights from school health records for boys born consecutively from January 1 and onwards in 1947 and every 5 years from 1951 to 1996 (n = 375 for each birth cohort from 1947-1991, n = 340 for the birth cohort in 1996, and n = 4090 for the total cohort). We estimated age at the peak height velocity (PHV), the maximum growth velocity during puberty, and childhood body mass index (BMI) at age 8 years f

SUBMITTER: Ohlsson C 

PROVIDER: S-EPMC6647355 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature