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. 2013 Aug;53(2):280-6.
doi: 10.1016/j.jadohealth.2013.03.007. Epub 2013 Apr 30.

Patterns of physical activity, sedentary behavior, and diet in U.S. adolescents

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Patterns of physical activity, sedentary behavior, and diet in U.S. adolescents

Ronald J Iannotti et al. J Adolesc Health. 2013 Aug.

Abstract

Objective: To identify patterns in adolescents' obesogenic behaviors and their relations to physical and psychological health.

Methods: A nationally representative sample of 9,174 U.S. adolescents ages 11 to 16 years was surveyed on physical activity (PA), screen-based sedentary behavior (SB), frequency of consumption of healthy and unhealthy food items, weight status, weight control behavior, depression, physical symptoms, body dissatisfaction, overall health, and life satisfaction. Latent class analysis was used to identify patterns of PA, SB, and diet.

Results: A model with three latent classes best fit the data: Class 1 with high PA and high fruit and vegetable intake and low SB and intake of sweets, soft drinks, chips, and fries; Class 2 with high SB and high intake of sweets, soft drinks, chips, and fries; and Class 3 with low PA, low fruit and vegetable intake, and low intake of sweets, chips, and fries. Membership in the three classes was related to age, gender, race/ethnicity, and socioeconomic status. In addition, members of Class 1 (26.5%) were more likely to be of normal weight status and to fare well on most of the other health indices; of Class 2 (26.4%) were less likely to be trying to lose weight but scored poorly on the mental health indices; and of Class 3 (47.2%) were less likely to be underweight and reported greater body dissatisfaction.

Conclusions: Three prevalent patterns of adolescent obesogenic behaviors were identified and these patterns related to weight status, depression, and other indicators of physical and psychological health.

Keywords: Adolescent obesity; Body mass index; Diet; Physical activity; Sedentary behavior; Television.

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Conflict of interest statement

Conflict of Interest: None

Figures

Figure 1
Figure 1
Item Probability: Involvement in Each Health Behavior for Each Latent Class Note. The cut-off for each dietary behavior was >=once/day.

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