Related Experiment Video
Updated: Dec 10, 2025

Determining Soil-transmitted Helminth Infection Status and Physical Fitness of School-aged Children
Published on: August 22, 2012
Physical deviation and precocious puberty among school-aged children in Leshan City: an investigative study
Qiong Wei1, Ming Wu1, Yu-Lin Li1
1Department of Pediatrics, The People's Hospital of Leshan, Sichuan, China.
Objective:
We investigated physical deviation and precocious puberty among school-aged children in Leshan City, to provide a theoretical basis for the management of precocious puberty in children.
Methods:
We selected 12 primary schools of Leshan City using a cluster random sampling method and conducted physical examinations among healthy students aged 4 12 years. A total of 11,000 students were recruited (5502 boys and 5498 girls). We measured body mass index (BMI), and participants were tested for precocious puberty according to the Tanner stages and standard maps. Nutritional status was also evaluated.
Results:
Obese and overweight children accounted for a high proportion of participants; the prevalence of underweight was the lowest. The prevalence of obesity among boys was higher than that in girls. Precocious puberty was mainly observed in girls, particularly those age 7 years old. The prevalence of precocious puberty among overweight and obese children was higher than that in children with normal weight.
Conclusion:
We identified a significant sex difference in precocious puberty among children in Leshan City. Overweight and obesity may be associated with precocious puberty.
More Related Videos
Related Concept Videos
Signs of Puberty
Socioemotional Experience and Gender Development
Conduct Disorder
Variation: Normal Distribution, Range, and Standard Deviation
Nature and Nurture
Changes in the Appendicular Skeleton with Age
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...

