期刊
JOURNAL OF PEDIATRIC PSYCHOLOGY
卷 32, 期 3, 页码 250-259出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/jpepsy/jsl024
关键词
adolescence; BMI; physical activity; sedentary behaviors; sociodemographics
Objective To assess how sociodemographic and activity behaviors contribute to adolescent body mass index (BMI). Methods One hundred and thirteen adolescents (M = 17 years; 42% Caucasian, 56% African American) were assessed on BMI. Teens reported activity levels and caregivers reported socioeconomic status (SES). Results Adolescents from lower SES backgrounds, and from minority groups, had higher BMI (r = -.26, p < .01 and t(110) = -3.01, p < .01). Formal statistical mediation tests revealed that sedentary behaviors significantly mediated the association between SES and BMI (Z = 2.31, p < .05), whereas physical activity significantly mediated the race-BMI association (Z = 2.32, p < .05). Conclusions Interventions targeting teen BMI could benefit by aiming to decrease sedentary behavior in low SES teens and increase physical activity in teens from minority groups.
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