Descriptive characteristics of study participants.

Sample sizes (N) and means and standard deviation (SD) are given for all continuous variables, and sample sizes and category % are given for categorical variables. AR is adiposity rebound; LTL is leukocyte telomere length. WHR is waist-to-hip ratio, BMI is body mass index, calculated as weight (kg)/height (m)2. BAI is body adiposity index, calculated as (hip circumference (cm))/((height(m)1.5)−18). BMI z-score change was calculated separately in males and females as the difference between the z-scores of BMI at 31 years, and BMI at AR.