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  • Title: Adolescent television viewing and unhealthy snack food consumption: the mediating role of home availability of unhealthy snack foods.
    Author: Pearson N, Biddle SJ, Williams L, Worsley A, Crawford D, Ball K.
    Journal: Public Health Nutr; 2014 Feb; 17(2):317-23. PubMed ID: 23195394.
    Abstract:
    OBJECTIVE: To examine whether home availability of energy-dense snack foods mediates the association between television (TV) viewing and energy-dense snack consumption among adolescents. DESIGN: Cross-sectional. SETTING: Secondary schools in Victoria, Australia. SUBJECTS: Adolescents (n 2984) from Years 7 and 9 of secondary school completed a web-based survey, between September 2004 and July 2005, assessing their energy-dense snack food consumption, school-day and weekend-day TV viewing and home availability of energy-dense snack foods. RESULTS: School-day and weekend-day TV viewing were positively associated with energy-dense snack consumption among adolescent boys (β = 0·003, P < 0·001) and girls (β = 0·03, P < 0·001). Furthermore, TV viewing (school day and weekend day) were positively associated with home availability of energy-dense snack foods among adolescent boys and girls and home availability of energy-dense snack foods was positively associated with energy-dense snack food consumption among boys (β = 0·26, P < 0·001) and girls (β = 0·28, P < 0·001). Home availability partly mediated the association between TV viewing and energy-dense snack consumption. CONCLUSIONS: The results of the present study suggest that TV viewing has a significant role to play in adolescent unhealthy eating behaviours. Future research should assess the efficacy of methods to reduce adolescent energy-dense snack food consumption by targeting parents to reduce home availability of energy-dense foods and by reducing TV viewing behaviours of adolescents.
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