A school-based program of physical activity may prevent obesity.

Area of Science:

• Pediatric Endocrinology
• Public Health Nutrition
• Sports Medicine

Background:

• Childhood obesity is a growing public health concern with long-term health implications.
• Early intervention during pre-pubertal years is crucial for establishing healthy lifestyle habits.
• Existing physical education and nutritional guidance programs require evaluation for effectiveness.

Purpose of the Study:

• To assess the efficacy of an organized intervention program in preventing obesity among pre-pubertal children.
• To evaluate the impact of increased physical education and nutritional advice on weight and Body Mass Index (BMI) in children aged 9-11.
• To investigate potential sex differences in response to the intervention.

Main Methods:

• A 2-year intervention study involving pre-pubertal children aged 9-11.
• The intervention group received double weekly physical education hours and nutritional advice for children and families.
• A control group received standard physical education lessons only for comparison.

Main Results:

• Boys in the intervention group showed significantly less weight gain (3.2 kg) compared to the control group (8.4 kg) (P<0.016).
• A significant difference in Body Mass Index (BMI) change was observed between groups, with the study group showing a lower increase (0.44 vs 1.02) (P<0.012).
• No significant changes in weight or BMI were observed in the girls' groups.

Conclusions:

• Organized intervention programs integrating physical activity and nutritional guidance can effectively prevent obesity in pre-pubertal children.
• The observed sex differences in outcomes may be attributed to hormonal factors and compliance variations at this age.
• Further research is warranted to explore the mechanisms behind sex-specific responses to obesity prevention programs.