J Korean Acad Fam Med.  2007 Mar;28(3):195-203.

Relationship between Physical Activity, Dietary Habits and Overweight of 7-year-old Korean Children

• Jung MH
• Song JH
• Chun JY
• Cho YG
• Kim YH
• Kim MJ
• Park HA
• Kang JH
• Lee SH
• Kim SH

Abstract

Background: Recently, the prevalence of childhood obesity has increased dramatically, but the cause still remains incompletely understood. The goal of this study was to present a direction for treatment and prevention of childhood obesity on the basis of the data of physical activity energy expenditure, inactive time and dietary habits of Korean children.
Methods
A total of 56 children were selected from 8 elementary schools in Seoul and Gwacheon-city. Children's physical activity pattern and dietary habits were obtained by questionnaire. The children wore accelerometer on their wrists from Friday to Tuesday over the whole weekend. Then, we calculated the activity energy expenditure using the activity counts recorded on the accelerometer.
Results
Neither the physical activity energy expenditure (kcal/kg) nor the activity pattern showed a significant difference between the normal weight group and the overweight group. The overweight children spent more time watching TV and using the computer. The overweight group did not have breakfast and ate much more and faster in terms of dietary habit.
Conclusion
This study suggests that bad habituations in diet and increase of inactivity time can play more important role than physical activity in causing overweight in 7-year-old children.

Keyword

childhood obesity; accelerometer; physical activity; physical inactivity; dietary habit

MeSH Terms

Breakfast
Child*
Diet
Energy Metabolism
Food Habits*
Humans
Motor Activity*
Overweight*
Pediatric Obesity
Prevalence
Seoul
Wrist
Surveys and Questionnaires