School Worksite Weight Gain Prevention Intervention Study

学校工作场所体重增加预防干预研究

• 批准号: 7895775
• 负责人: Stephenie C. Lemon
• 金额: $ 67.9万
• 依托单位: UNIV OF MASSACHUSETTS MED SCH WORCESTER
• 依托单位国家: 美国
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-07-17 至 2011-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7895775
• 关键词: Absenteeism; Adult; Behavior; Body mass index; Centers for Disease Control and Prevention (U.S.); Choice Behavior; Consumption; Control Groups; Country; Dietary Practices; Eating; Eating Behavior; Effectiveness; Effectiveness of Interventions; Employee; Employee Health; Energy Intake; Enrollment; Evaluation; Expenditure; Facilities and Administrative Costs; Family; Health Promotion; Health behavior change; Hospitals; Hour; Individual; Intake; Intervention; Intervention Studies; Investigation; Massachusetts; Measurement; Measures; Mediating; Medical; Modeling; Morbidity - disease rate; Neighborhoods; Obesity; Occupations; Overweight; Participant; Pattern; Phase; Physical activity; Population; Preventive Intervention; Printing; Productivity; Public Health; Randomized; Randomized Controlled Trials; Rural; Sampling; Schools; Self Efficacy; Self-control as a personality trait; Site; Social Class; Social Marketing; Social support; Testing; Time; United States; Weight; Weight Gain; Weight maintenance regimen; Workplace; base; behavior change; cost; design; economic cost; effective intervention; experience; fruits and vegetables; health economics; high school; instrumentation; intervention effect; mortality; prevent; primary outcome; productivity loss; programs; public health relevance; randomized trial; saturated fat; school health; teacher; waist circumference; weight gain prevention

DESCRIPTION (provided by applicant): The purpose of this four-year study, "School Worksite Weight Gain Prevention Intervention Study", is to determine the effectiveness of an ecological worksite intervention compared to a self-directed, print-materials only control group at reducing weight gain among public high school employees in Massachusetts. The intervention, called Step Ahead, is a comprehensive intervention targeting the three levels suggested by ecological frameworks for health behavior change: (1) the organizational (school) level, (2) the interpersonal level, and (3) the individual level. A social marketing campaign will integrate all program activities using common logos, themes and messages. Evaluation of the proposed intervention will be by a randomized controlled trial (RCT) in which the unit of randomization and intervention is the school worksite and the unit of evaluation and inference is the employee. Eighteen schools will be stratified into three strata: large urban, small urban or rural schools. Within each stratum, schools will be randomized to either the ecological intervention or print materials only control condition. A total of 540 teachers and staff from 18 schools will be enrolled and retained, 360 from intervention and 360 from control sites. Assessments will be completed at five time points: baseline, 6 months, 12 months, 18 months and 24 months. The primary aim of this study is to determine the effectiveness of the intervention in preventing employee weight gain, as measured by change in BMI and waist circumference, over the 24- month intervention period. Secondary aims include determining the effects of the intervention on physical activity, caloric intake, saturated fat intake and consumption of fruits and vegetables among employees, as well determining the effects on absenteeism and presenteeism. Tertiary aims are to determine the effects of the intervention on mediating and moderating factors, including perceived organizational commitment to employee health, perceived co-worker normative influences for healthy eating and physical activity, social support for healthy behaviors, self-efficacy and self- control. The proposed study builds off of the study team's previous studies and experiences in designing, implementing and evaluating ecological worksite interventions and in conducting large-scale randomized controlled trials in the high school setting. There are three phases to the investigation: Phase I: Recruitment of schools and intervention and instrumentation refinement; Phase II: Intervention implementation and evaluation; Phase III: Analysis and dissemination. PUBLIC HEALTH RELEVANCE: The proposed site-level randomized trial will test the effectiveness of a worksite intervention based on an ecological framework at preventing weight gain among high school employees in Massachusetts. If effective, the intervention is designed to be generalizable to high school settings across the country and has the potential to reduce the morbidity, mortality and economic costs of overweight and obesity in this important population.

描述（由申请人提供）：这项为期四年的研究“学校工作场所体重增加预防干预研究”的目的是确定生态工作场所干预与自我指导、仅印刷材料对照组相比在减少马萨诸塞州公立高中员工体重增加方面的有效性。这项名为“Step Ahead”的干预措施是针对健康行为改变生态框架建议的三个层面的综合干预措施：（1）组织（学校）层面，（2）人际层面，（3）个人层面。社交营销活动将使用通用徽标、主题和信息整合所有计划活动。对拟议干预措施的评估将通过随机对照试验（RCT）进行，其中随机化和干预的单位是学校工作场所，评估和推理的单位是雇员。十八所学校将分为三层：大城市学校、城市小学校或农村学校。在每个阶层中，学校将被随机分配到生态干预或仅印刷材料控制条件。共有来自 18 所学校的 540 名教师和工作人员将被招收和保留，其中 360 名来自干预点，360 名来自控制点。评估将在五个时间点完成：基线、6 个月、12 个月、18 个月和 24 个月。本研究的主要目的是确定干预措施在预防员工体重增加方面的有效性（通过 24 个月的干预期内 BMI 和腰围的变化来衡量）。次要目标包括确定干预措施对员工体力活动、热量摄入、饱和脂肪摄入以及水果和蔬菜消费的影响，以及确定对缺勤和出勤的影响。第三个目标是确定干预对中介和调节因素的影响，包括感知到的组织对员工健康的承诺、感知到的同事对健康饮食和身体活动的规范影响、对健康行为的社会支持、自我效能和自我控制。拟议的研究建立在研究团队之前在设计、实施和评估生态工作场所干预措施以及在高中环境中进行大规模随机对照试验的研究和经验的基础上。调查分为三个阶段： 第一阶段：学校招募、干预和仪器完善；第二阶段：干预措施实施和评估；第三阶段：分析和传播。公共卫生相关性：拟议的现场随机试验将测试基于生态框架的工作现场干预措施在防止马萨诸塞州高中员工体重增加方面的有效性。如果有效，该干预措施将推广到全国的高中环境，并有可能降低这一重要人群中超重和肥胖的发病率、死亡率和经济成本。