OBJECTIVE: This study aimed to examine the relationships between body mass index (BMI) and television viewing, Internet use and cellular phone use and the moderators for these relationships in adolescents. METHOD: The relationship between BMI and the time spent on three kinds of sedentary activities and the moderators for these relationships were analyzed among 9,278 Taiwanese adolescents. The different relationships between BMI and various Internet and cellular phone-related activities were analyzed. RESULTS: High television viewing and high Internet use were associated with increased BMI in adolescents. Exercising had a moderating effect on the relationship between BMI and television viewing. Several Internet and cellular phone-related activities were associated with increased BMI. DISCUSSION: The results support the relationships between adolescent BMI and television viewing and Internet use. The moderating effect of exercise and various Internet and cellular phone-related activities should be considered when developing intervention strategies for overweight adolescents.
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Yen et al. (2009) studied this question.
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