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Objectives: To examine potential mediators of adolescent girls' dietary behavior change in the Nutrition and Enjoyable Activity for Teen Girls (NEAT Girls) intervention for obesity prevention. Methods: Participants were 294 adolescent girls attending 12 secondary schools located in low-income communities of New South Wales, Australia. Hypothesized social cognitive mediators of dietary behavior change were assessed using valid and reliable scales. Results: The intervention effects on dietary outcomes and hypothesized mediators were not statistically significant. However, changes in hypothesized mediators were associated with changes in key dietary behaviors. Conclusions: Continued research is needed to examine effective strategies for improving dietary outcomes in youth, and to explore alternative theoretical mechanisms of dietary behavior change. [ABSTRACT FROM AUTHOR]

Objectives: To examine the determinants of physical activity (PA) in young adult cancer survivors (YACS). Methods: A survey of 588 YACS in Alberta, Canada, assessed PA, medical and demographical factors, and theory of planned behavior variables. Results: Path analysis explained 38% (P<.001) of the variance in PA with significant contributions from intention, planning, affective attitude, education, and general health. In turn, 56% (P<.001) of the variance in intention was explained by perceived behavioral control, instrumental attitude, and affective attitude. Conclusion: PA interventions in YACS should focus on developing strong intentions by targeting perceived behavioral control, instrumental attitude, and affective attitude. [ABSTRACT FROM AUTHOR]