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The present study evaluated gender differences in the associations of functional limitation with food insecurity and depressive symptoms. Using data from 3,624 respondents ages 18to 80 years from two pooled cross-sectional cycles (2011–2012 and 2013–2014) of the National Health and Nutrition Examination Survey (NHANES), a structural equation model was estimated to assess gender differences in the association between physical limitation and food insecurity, and whether indicators of economic resources mediated an observed interaction. Results demonstrate that food insecurity accounted for about one-tenthof the association between functional limitation and depressive symptoms. Furthermore, these associations were more pronounced among women and were not explained by variation in economic resources. Food insecurity thus appears to be an indicator of psychological adversity among people with functional limitations, especially women, independent of other indicators of economic resources and hardship. Health promotion and social programs should address food insecurity as a unique dimension of adversity in efforts to improve health and well-being. [ABSTRACT FROM AUTHOR]

Objective: In this study, we examined leisure-time aerobic physical activity (PA) and PA self-ef- ficacy levels and assessed their relationship in a vulnerable adult population. Methods: Data regarding 909 respondents were drawn through the baseline interview from a group randomized community-based intervention in Appalachia. Leisure-time PA was assessed by using the Godin Leisure Time Questionnaire. Results: Levels of leisure-time physical activity and related self-efficacy were low among the study participants. In unadjusted and adjusted analyses, physical activity self-efficacy was positively associated with engagement in the recommended levels of physical activity. Conclusion: Promotion of physical activity by emphasizing an individual's confidence in ability to perform may be relevant for future health interventions concerned with adoption of health behaviors among vulnerable populations. [ABSTRACT FROM AUTHOR]

Previous research has documented social contagion in obesity and related health behaviors, but less is known about the social processes underlying these patterns. Focusing on married or cohabitating couples, we simultaneously explore three potential social mechanisms influencing obesity: normative body size, social control, and behavior modeling. We analyze the association between partner characteristics and the obesity-related health behaviors of focal respondents, comparing the effects of partners’ body type, partners’ attempts to manage respondents’ eating behaviors, and partners’ own health behaviors on respondents’ health behaviors (physical activity, fruit and vegetable consumption, and fast food consumption). Data on 215 partners are extracted from a larger study of social mechanisms of obesity in family and community contexts conducted in 2011 in the United States. Negative binomial regression models indicate that partner behavior is significantly related to respondent behavior (p < .001), net of controls. These results are suggestive of a behavior modeling mechanism in obesity-related patterns of consumption and physical activity. In contrast, we find little support for the influence of normative body size or partner social control in this sample, though generalizations about the relevance of these processes may be inappropriate. These results underscore the importance of policies and interventions that target dyads and social groups, suggesting that adoption of exercise or diet modifications in one individual is likely to spread to others, creating a social environment characterized by mutual reinforcement of healthy behavior. [ABSTRACT FROM AUTHOR]