Is there any association between TV viewing and obesity in preschool children in Japan?

Ayako Sasaki, Takashi Yorifuji, Toshihide Iwase, Hirokazu Komatsu, Soshi Takao, Hiroyuki Doi

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Obesity in children is a serious public health problem, and TV viewing is considered a potential risk factor. Since, however, no relevant association studies have been conducted in Japan, we evaluated the association between TV viewing and obesity using a population-based study conducted in a Japanese town. All 616 preschool children in the town were enrolled in February 2008, and a self-administered questionnaire to collect children's and parents' characteristics was sent to the parents. We dichotomized the time spent TV viewing and evaluated associations by logistic regression using a "less than 2h" category as a reference. The questionnaire was collected from 476 participants (77.3%), of whom 449 were available for the final analyses. Among them, 26.9% of preschool children reported 2 or more hours of TV viewing per day and 8.2% were defined as obese. In logistic regression analyses, there was no positive association in unadjusted (odds ratio [OR] = 1.11, 95% confidence interval [95% CI]: 0.50-2.49) or adjusted models for exclusively breastfed status, sleep duration, or maternal factors (OR = 1.11, 95% CI: 0.50-2.51). We also found no positive association between TV viewing and overweight status, possibly owing to the influence of social environment, low statistical power, or misclassification.

Original languageEnglish
Pages (from-to)137-142
Number of pages6
JournalActa medica Okayama
Issue number2
Publication statusPublished - Apr 2010


  • Obesity
  • Preschool children
  • TV viewing

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)


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