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Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Late Preschool BMI Acceleration as the Strongest Predictor of Childhood Cardiometabolic Risk at School Entry: A
Shuang Zhang1, Jinnan Liu1, Weiqin Li1
1Tianjin Women and Children's Health Center, Tianjin, People's Republic of China.
Insights
Late rapid childhood body mass index (BMI) growth significantly impacts cardiometabolic risk by age 6. Maternal gestational weight gain (GWG) showed minimal direct effects, highlighting the critical preschool window for intervention.
Area of Science:
- Pediatric endocrinology
- Maternal-fetal medicine
- Cardiometabolic health
Background:
- Gestational weight gain (GWG) and offspring BMI trajectories are linked to childhood metabolic health.
- Understanding these associations is crucial for early intervention strategies.
Purpose of the Study:
- To investigate the independent and combined effects of maternal GWG patterns and offspring BMI growth trajectories on lipid and glycemic profiles at age 6.
- To identify critical periods for intervention in childhood cardiometabolic risk.
Main Methods:
- Analysis of 39,169 mother-child pairs from the Tianjin Women and Children Health Cohort.
- Categorization of maternal GWG into four trajectories and offspring BMI into four trajectories (birth to age 6).
- Multivariable linear regression and ANOVA to assess associations with triglycerides, total cholesterol, and fasting glucose.
Main Results:
- Late rapid offspring BMI growth (after age 3) was the strongest predictor of adverse metabolic outcomes (higher triglycerides and glucose).
- Persistent low BMI trajectory was associated with lower triglycerides and glucose.
- Maternal GWG showed minimal independent association with offspring lipid/glycemic profiles after adjusting for child's BMI.
Conclusions:
- Late preschool BMI acceleration is a key factor for cardiometabolic risk at school entry.
- Maternal GWG primarily influences childhood growth rather than directly impacting metabolic profiles.
- The preschool period is a critical window for monitoring BMI trajectories and implementing targeted interventions.
Objective:
This study aimed to examine the independent and joint associations of maternal gestational weight gain (GWG) patterns and offspring BMI growth trajectories with lipid and glycemic profiles at age 6.
Methods:
This analysis included 39,169 mother-child pairs from the Tianjin Women and Children Health Cohort. Maternal GWG was categorized into four trajectories: Adequate throughout (reference), Excessive early-only, Excessive late-only, and Excessive throughout. Offspring body mass index (BMI) trajectories from birth to age 6 were identified using group-based trajectory modeling, yielding four groups: Persistent Low, Normal (reference), Early Rapid, and Late Rapid. Multivariable linear regression assessed associations with triglycerides (TG), total cholesterol (CHO), and fasting glucose (GLU) at age 6. Interaction was tested via two-way ANOVA.
Results:
Children with Late Rapid BMI growth (18.7%; accelerated gain after age 3) were almost universally overweight or obese by age 6 (99.7%). This trajectory was the strongest independent predictor of adverse metabolic outcomes. Compared to the Normal trajectory, the Late Rapid group had significantly higher TG (β = 0.193 mmol/L, 95% CI: 0.179-0.206) and GLU (β = 0.047 mmol/L, 95% CI: 0.030-0.064). The Persistent Low trajectory (12.3%) was associated with lower TG and GLU. Maternal GWG trajectories showed no independent association with offspring TG or GLU after adjustment for child's current BMI; only Excessive early-only GWG retained a weak association with higher CHO (β = 0.038, 95% CI: 0.011-0.064). A significant interaction was observed for TG (P = 0.012).
Conclusion:
Late preschool BMI acceleration is the most influential factor for adverse cardiometabolic risk at school entry identified in this cohort, affecting one in five children with effect sizes five times larger than any maternal GWG pattern. Maternal GWG exerts minimal direct effects beyond shaping childhood growth. The preschool years represent a critical window for early BMI trajectory monitoring and targeted intervention.
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