Spinal overload: a concern for obese children and adolescents?

Area of Science:

• Pediatric endocrinology
• Bone health
• Childhood obesity

Background:

• Children with excess weight need stronger bones.
• Understanding compensatory bone development in overweight/obese youth is important.

Purpose of the Study:

• To assess if overweight and obese children exhibit compensatory increases in spinal bone mineral content (BMC) and area.
• To compare spinal BMC and area in normal-weight, overweight, and obese children and adolescents.

Main Methods:

• Cross-sectional observational study involving 202 boys and 160 girls aged 3-19 years.
• Dual-energy X-ray absorptiometry (DXA) used to measure vertebral area and BMC of lumbar vertebrae L2-L4.
• Subjects classified as normal weight, overweight, or obese based on international body mass index (BMI) cutoffs.

Main Results:

• Overweight and obese children showed lower vertebral BMC relative to bone area, height, weight, and pubertal development compared to normal-weight peers.
• Overweight and obese girls had smaller spinal areas, while boys had appropriately enlarged spinal areas for their body size.
• The increase in spinal bone mineral content did not fully compensate for the increased body weight in overweight and obese children.

Conclusions:

• Overweight and obese children do not develop sufficient spinal bone mineral content to fully offset their excess weight during growth.
• Excessive adiposity in childhood and adolescence may lead to increased loading and stress on the lumbar spine.
• Recommendations include limiting excessive adiposity to protect pediatric spinal health.