Association of total body fat and fat distribution with bone mineral density among children and adolescents aged 6-17 years from Guangzhou, China.

This study aimed to assess the associations of total body fat and fat distribution with bone mineral density (BMD) among children and adolescents in this cross-sectional study. A total of 1032 boys and 897 girls aged 6-17 years were enrolled between May 2019 and June 2019 in Guangzhou, China. BMD, total body fat (fat mass index [FMI] and body fat percentage [BF%]), and fat distribution (trunk-to-limb and android-to-gynoid ratios) were measured by dual-energy X-ray absorptiometry.

High birth weight and its interaction with physical activity influence the risk of obesity in early school-aged children.

Background: High birth weight (HBW) is associated with childhood obesity, but with inconsistent results. This study investigated the relationship between HBW and childhood obesity, and further explored the interaction of HBW with behavioral and socio-economic determinants of obesity.

Methods: This cross-sectional study enrolled 1906 grade-two children of Guangzhou, China, from June to November, 2016.