The combined influence of fat consumption and repeated mental stress on brachial artery flow-mediated dilatation: a preliminary study.

Experienced separately, both acute mental stress and high-fat meal consumption can transiently impair endothelial function, and the purpose of the present study was to investigate their combined impact. On four separate days, 10 healthy men (23 years old) underwent brachial artery flow-mediated dilatation (FMD) tests, before and hourly for 4 h post-consumption of a high-fat (HFM; 54 g fat) or low-fat meal (LFM; 0 g fat; each meal ∼ 1000 calories), with hourly mental stress (mental arithmetic, speech) or control (counting) tasks (conditions HFM+S, LFM+S, HFM and LFM). Data are presented as means ± SD.

Barriers to access of maternity care in kenya: a social perspective.

Objective: In response to high maternal mortality rates, the global community has rallied to improve the state of maternal health worldwide. However, progress towards the fifth Millennium Development Goal, "Improve Maternal Health," has been disappointingly slow. There is a pressing need to address the factors that contribute to maternal mortality, one of which is access to care.

Condom Use Trajectories in Adolescence and the Transition to Adulthood: The Role of Mother and Father Support.

Few studies have investigated how mother and father support differ on predicting youths' sexual risk behavior. We therefore examined the influence of parental support on condom use trajectories and its correlates in a predominantly African American sample [(N=627; 53% female; M = 14.86 years (SD=.

Social support moderates the relationship between gay community integration and sexual risk behavior among gay male couples.

Few studies of partnered gay men consider the social context within which sexual behaviors occur or investigate positive aspects of the social environment that may offset factors that are related to risky sexual behaviors. Fewer still include assessment of both individuals making up couples. Using an ecological framework and an actor-partner multilevel analysis approach, the authors investigate how three dimensions of gay community integration are related to individual sexual risk behavior among 108 individuals in 54 couples.

Growth trajectories of sexual risk behavior in adolescence and young adulthood.

Objectives: Adolescence and young adulthood (ages 18-25 years) are periods of development and change, which include experimentation with and adoption of new roles and behaviors. We investigated longitudinal trajectories of sexual risk behaviors across these time periods and how these trajectories may be different for varying demographic groups.

Methods: We developed multilevel growth models of sexual risk behavior for a predominantly African American sample (n=847) that was followed for 8 years, from adolescence to young adulthood.

HIV risk and protection among gay male couples: the role of gay community integration.

This study examined the association between different types of integration in the gay community and HIV risk among gay male couples. Previous research linking gay community integration and involvement among couples to HIV risk has been equivocal. Each partner in 59 gay couples completed a separate anonymous questionnaire that assessed two types of social involvement in the gay community, assimilation into the gay community, and sexual HIV risk behaviors.

Adolescent resilience: a framework for understanding healthy development in the face of risk.

Adolescent resilience research differs from risk research by focusing on the assets and resources that enable some adolescents to overcome the negative effects of risk exposure. We discuss three models of resilience-the compensatory, protective, and challenge models-and describe how resilience differs from related concepts. We describe issues and limitations related to resilience and provide an overview of recent resilience research related to adolescent substance use, violent behavior, and sexual risk behavior.