Joint associations of physical activity and screen time with overweight among japanese adults

Yung Liao, Kazuhiro Harada, Ai Shibata, Kaori Ishii, Koichiro Oka, Yoshio Nakamura, Takemi Sugiyama, Shigeru Inoue, Teruichi Shimomitsu

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Background: Although both insufficient physical activity (PA) and high screen time (ST) are independent risk factors for obesity, how the combination of sufficient/insufficient PA and high/low ST could increase obesity risk among the adult population of Japan is not known. This study examined joint associations of PA and ST with overweight among Japanese adults.Methods: An Internet-based survey collected data on height, weight, self-reported time spent in PA and ST, and sociodemographic variables from 2832 adults. Respondents were categorized into sufficient PA/low ST, sufficient PA/high ST, insufficient PA/low ST, or insufficient PA/high ST categories as per public PA guidelines and the median of ST. Logistic regression analysis examined the odds ratios (OR) of being overweight (body mass index, ≥ 25 kg/m 2) according to the categories of PA and ST.Results: In comparison with the sufficient PA/low ST category, participants in the insufficient PA/high ST category were significantly more likely overweight (OR, 1.48; 95% confidence interval [95%CI), 1.14, 1.93) after adjusting for sociodemographic variables. A significantly higher OR for overweight (including obesity) among insufficient PA/high ST category was also observed in men, but no significant association was found in women.Conclusions: Both insufficient PA and prolonged ST contribute to overweight and obesity among Japanese adults. Public health initiatives addressing obesity in Japan need to consider both promoting PA and reducing ST, especially in men.

Original languageEnglish
Article number131
JournalInternational Journal of Behavioral Nutrition and Physical Activity
Volume8
DOIs
Publication statusPublished - 2011 Nov 30

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Exercise
Obesity
Odds Ratio
Japan
Internet
Body Mass Index
Public Health
Logistic Models
Regression Analysis
Guidelines
Confidence Intervals
Weights and Measures

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Medicine(all)

Cite this

Joint associations of physical activity and screen time with overweight among japanese adults. / Liao, Yung; Harada, Kazuhiro; Shibata, Ai; Ishii, Kaori; Oka, Koichiro; Nakamura, Yoshio; Sugiyama, Takemi; Inoue, Shigeru; Shimomitsu, Teruichi.

In: International Journal of Behavioral Nutrition and Physical Activity, Vol. 8, 131, 30.11.2011.

Research output: Contribution to journalArticle

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AU - Harada, Kazuhiro

AU - Shibata, Ai

AU - Ishii, Kaori

AU - Oka, Koichiro

AU - Nakamura, Yoshio

AU - Sugiyama, Takemi

AU - Inoue, Shigeru

AU - Shimomitsu, Teruichi

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