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1425 The Relationship of Objective Measure of Sleep Pattern and its Association with Obesity in Primary School Children in Tehran City
  1. A Saber Gharamaleki1,
  2. A Zamani2,
  3. M Hosseini3,
  4. K Jaafarian4
  1. 1Faculty of Health and Nutrition, Students’ Research Committee, Tabriz University of Medical Science, Tabriz
  2. 2Department of Nutrition and Biochemistry
  3. 3Department of Epidemiology and Biostatistics, Tehran University of Medical Sciences
  4. 4Department of Nutrition and Biochemistry & Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Science, Tehran, Iran


Objective To investigate the pattern of sleep and its relationship with obesity in primary school children.

Materials and Methods We carried out a cross sectional study. Data were obtained from a representative sample 270 primary school children (119 boys and 151girls) aged 6–9 years. Sleep pattern was measured for 7 consecutive days using Actigraph accelerometer as well as daily logs. Directly measured height and weight data were used to define overweight and obesity according to the centers for disease Control and Prevention’s (CDC) 2000 Growth Charts.

Results No significant difference (p>0.05) was found in current study between boys and girls for BMI percentiles, weekend sleep duration and efficiency. But girls were found to have higher values (p<0.05) than those of boys for height, weight for age and lower values for 7 days and weekdays sleep duration. However, after adjusting these data for age the significant difference for 7 days and weekdays sleep duration disappeared. In addition, sleep efficiency was higher (p<0.05) in girls than boys during 7 days and weekdays.

Conclusions The current study revealed no differences for sleep duration and efficiency among overweight and obese children compared to normal weight one. However, other lifestyle factors might be related to body weight status in children.

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