Dietary intake assessment
Daily food intake was estimated at pre-and post-intervention with validated 24-h dietary recalls (two weekdays and one weekend day). To help children accurately recall their diet, their parents recorded all consumed food items and beverages. Energy intake was analyzed by commercial software (Boohee Info Technology, Shanghai, China). All data were represented as kilocalories per day (kcal/day). All children were informed to maintain a normal diet and avoid overeating throughout the study.