[Application of Mycoplasma pneumoniae antibody and load index in the diagnosis of Mycoplasma pneumoniae pneumonia in children].

Objective: To study the role of Mycoplasma pneumoniae (MP) load and antibody measurements in the diagnosis of MP pneumonia.

Methods: A total of 115 children with MP pneumonia and 400 healthy children were enrolled. The MP load and total antibody level were measured at different stages, and the MP load index (MPLI) was calculated.

Report on childhood obesity in China (8): effects and sustainability of physical activity intervention on body composition of Chinese youth.

Objectives: To determine whether a large-scale physical activity intervention could affect body composition in primary school students in Beijing, China.

Methods: The study design was one-year cluster randomized controlled trial of physical activity intervention (20 min of daily exercise in the classroom) with an additional year of follow-up among 4 700 students aged 8-11 years at baseline.

Results: After the one-year intervention, BMI increased by 0.

[Study on the relation between anthropometric parameters and lipids profiles].

Objective: To study the relations between anthropometric parameters [body mass index (BMI), percent of body fat, waist circumference] and blood lipids of urban children in Beijing and to compare the ability of prediction effect of waist circumference, percent body fat and BMI on lipid profiles.

Methods: 852 children aged 9-10 were recruited with multi-stage sampling. Serum lipids of children were measured using automatic biochemical instrument.