权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Obesity stigma and health behavior: An experimental approach

肥胖耻辱和健康行为：实验方法

基本信息

批准号：
10274183
负责人：
A. Janet Tomiyama
金额：
$ 45.14万
依托单位：
UNIVERSITY OF CALIFORNIA LOS ANGELES
依托单位国家：
美国
项目类别：
财政年份：
2021
资助国家：
美国
起止时间：
2021-07-01 至 2024-06-30
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/10274183
关键词：
Adult American Anxiety Attitude Behavior Behavioral Binge Eating Body mass index COVID-19 COVID-19 pandemic Calories Cardiovascular Diseases Censuses Data Diet Diet Records Discrimination Eating Ecological momentary assessment Etiology Exercise Experimental Designs Food Future Goals Health Health behavior Health behavior change Healthcare Hour Human Individual Intake Intervention Knowledge Life Literature Measures Mental Depression Nature Obesity Outcome Overweight Participant Patient Self-Report Physical activity Population Prejudice Process Public Health Randomized Research Risk Risk Behaviors Risk Factors Sleep Sleep disturbances Societies Source Stigmatization Strenuous Exercise Stress and Coping Testing Time Unhealthy Diet Weight Work actigraphy allostatic load base demographics diet and exercise experience experimental study improved laboratory experiment mortality obesity risk obesogenic pandemic disease physical inactivity poor sleep preventable death programs resilience social stigma theories

项目摘要

PROJECT SUMMARY Over 70% of U.S. adults are classifiable as overweight or obese, and weight stigma, defined as the negative attitudes, prejudice, and discrimination directed at heavier individuals, is highly prevalent. Our long-term goal is to understand and ultimately mitigate the negative behavioral effects of weight stigma that pose risk for obesity and cardiovascular disease. In order to achieve this goal, we must first gain a fundamental understanding of the causal processes of weight stigma and how it functions in people’s lives to promote obesity. Therefore, the focus of this basic experimental study in humans (BESH) is to use an experimental manipulation as a probe in order to gain a fundamental causal understanding of the obesogenic nature of weight stigma. Much of the available evidence tying weight stigma to poor health outcomes is observational, precluding conclusions regarding causality. The few existing experimental studies that can infer causality only assess immediate outcomes in artificial lab settings. Moreover, the literature has thus far focused on documenting the negative effects of weight stigma, without attending to resilience factors that could confer protection against them. Therefore, our overall objectives are to (1) test the central hypothesis that weight stigma causes decrements in health behaviors in everyday life using ecological momentary assessment (EMA) and actigraphy, and (2) identify resilience factors that could, in future work, be targeted in weight stigma interventions. The central hypothesis is based on existing literature and our 8 preliminary studies, which include a study of 2,000 participants census-matched to U.S. population demographics demonstrating associations between greater weight stigma and binge eating and sleep disturbance. Our focus on health behaviors is important because behaviors account for 40% of preventable deaths and are strongly protective against obesity and cardiovascular disease. Moreover, there is evidence that the COVID-19 pandemic is detrimentally impacting diet, exercise, and sleep. Using a true experimental design, we will therefore pursue the following aims that capitalize on our deep experience manipulating weight stigma in laboratory experiments and our demonstrated expertise in ecological momentary assessment and actigraphy studies. AIM 1: Test the causal effects of weight stigma on diet, physical activity, and sleep in everyday life—we will randomly assign participants to a weight stigma vs. control manipulation and measure changes health behaviors in their everyday lives (3-day diet as captured by EMA food diaries, objectively measured physical activity captured by 24-hour actigraphy, and sleep, captured objectively by overnight actigraphy and subjectively self-reported sleep measures). AIM 2: Identify resilience factors that confer protection against the causal effects of weight stigma—we will test moderators drawn from two sources of theory (identity/belongingness and stress/coping). This research will provide a fundamental understanding of weight stigma to potentially identify a future intervention target to ameliorate unfavorable health consequences for the hundreds of millions of Americans at risk for weight stigma, obesity, and cardiovascular disease.

项目总结