ESPE2023 Poster Category 1 Growth and Syndromes (75 abstracts)
Associations between weight-related anthropometric measurements and occurrence of breast development, pubic hair and menarche
Ingvild S. Bruserud 1 , Mathieu Roelants 2 & Pétur B. Júlíusson 1,3,4
1Children and Youth Clinic, Haukeland University Hospital, Bergen, Norway. 2Environment and Health, Department of Public Health and Primary Care, KU Leuven, University of Leuven, Leuven, Belgium. 3University of Bergen, Department of Clinical Science, Bergen, Norway. 4Department of Health Registries, Norwegian Institute of Public Health, Bergen, Norway
Background: The timing of puberty is influenced by different factors, one of which is body composition. The aim of the current study was to investigate if anthropometric indicators of body composition, body mass index(BMI), waist circumference(WC), subscapular skinfold(SSF) and body fat percentage(BF%) were differentially associated with occurrence of breast development, pubic hair and menarche in Norwegian girls.
Methods: A total of 540 girls aged 8-16 years were examined in the cross-sectional Bergen Growth study 2 (BGS2) in 2016. Pubertal assessments included Tanner Breast (B2–B5) and Pubic hair (PH2–PH5) stages, menarche(no/yes), and ultrasound assessments of breast development (US B2-B5). Associations between BMI, WC, SSF and BF% and occurrence of the pubertal milestones were investigated with binary logistic regression adjusted for age. Anthropometric measurements were categorized as low(-1SD), average(-1≤SD≤1) or high(>1SD). Girls with high and low anthropometric levels were compared to average.
Results: Girls with high levels of weight-related anthropometric measurements were more likely to have reached all pubertal markers compared to those being average. Girls with low levels were less likely to have reached pubertal status according to the different anthropometric measurements. Findings were most consistent for BMIsd. For the consecutive stages of breast (B3-B5) and pubic hair (PH2-PH5) development, girls with high levels of anthropometric markers were more likely to have more advanced stages of puberty compared to girls with average levels, and the opposite was found for girls with low levels.
| Tanner≥B2 | US B≥2 | Menarche | ||||||||
| OR | 95%CI | P-value | OR | 95% CI | P-value | OR | 95% CI | P-value | ||
| BMIsd | low | 0.3 | 0.1-0.8 | 0.016* | 0.33 | 0.1-0.8 | 0.010* | 0.15 | 0.1-0.4 | 0.000* |
| high | 2.8 | 1.2-6.4 | 0.018* | 3.67 | 1.4-9.3 | 0.007* | 4.7 | 1.8-12.1 | 0.001* | |
| SSFsd | low | 0.5 | 0.2-1.0 | 0.062 | 0.40 | 0.2-0.9 | 0.034* | 0.13 | 0.1-0.4 | 0.000* |
| high | 1.7 | 0.9-3.5 | 0.123 | 1.96 | 0.9-4.1 | 0.075 | 3.66 | 1.6-8.4 | 0.002* | |
| WCsd | low | 0.5 | 0.2-1.2 | 0.188 | 0.41 | 0.2-1.1 | 0.082 | 0.18 | 0.1-0.5 | 0.002* |
| high | 3.4 | 1.4-8.4 | 0.009* | 5.32 | 1.7-16.9 | 0.005* | 4.2 | 1.7-10.4 | 0.002* | |
| BF%sd | low | 1.16 | 0.53 -2.5 | 0.714 | 1.10 | 0.52-2.4 | 0.768 | 0.15 | 0.1-0.4 | 0.000* |
| high | 2.22 | 0.96-5.1 | 0.062 | 2.48 | 1.0-6.2 | 0.052 | 3.05 | 1.0-9.2 | 0.049* | |
Conclusions: The associations between anthropometric indicators of body composition in early puberty appear similar, although weaker when compared to the late pubertal marker menarche. Our findings support a maturational effect on BMI from pubertal onset.
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