Article

The association of television viewing with snacking behavior and body weight of young adults

Department of Health Studies and Gerontology, University of Waterloo, Waterloo, Canada.
American journal of health promotion: AJHP (Impact Factor: 2.37). 05/2008; 22(5):329-35. DOI: 10.4278/ajhp.22.5.329
Source: PubMed

ABSTRACT Investigate whether TV viewing and recognition of snack food advertisements were associated with snack food consumption and the odds of being overweight or obese.
Cross-sectional internet-based survey.
University of Alberta, Edmonton, Canada.
Undergraduate university students aged 18 to 25 years (N = 613).
Self-reported TV viewing, energy-dense snack consumption, snacking while viewing TV, and body weight.
Hypothesis testing was completed using multiple analysis of variance, analysis of covariance, and logistic regression.
Students reporting medium or high TV viewership snacked more frequently while watching TV and recognized more advertising than students who were considered low viewers. High viewers also reported more consumption of energy-dense snacks than low viewers. Snacking frequency appeared to be related to TV viewing and place of residence, but the association between snacking frequency and TV viewing was not accounted for by advertising. Conversely, the association between TV viewing and consumption of energy-dense snacks was accounted for by advertising recognition. Finally, male students (odds ratio [OR], 2.78; 99% confidence interval [CI], 1.68-4.59) and medium (OR, 3.11; 99% CI, 1.37-7.08) and high (OR, 5.47; 99% CI, 1.97-15.16) TVviewers had higher odds of being overweight or obese.
Associations were found among TV viewing, energy-dense snack consumption, and snacking behavior, and between TV viewing and body weight status.

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    • "A previous study reported that odds of being obese was 1.87 times greater for children viewing TV more than 3 hr/day, compared to those watching for less than 1 hr (Hernández et al., 1999), which is congruent with the findings of the current study, showing significantly higher BMI among subjects with screen time of 3 or more hr/day, compared to those with less than 1 hr/day. A previous study reported an association of sedentary behavior related to screen time with lowering of metabolic rates, increased consumption of snacks, and exposure to junk food advertisements, which may contribute to increase in BMI (Robinson, 2001; Thompson, Spence, Raine, & Laing, 2008). "
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