School Worksite Weight Gain Prevention Intervention Study

Study Overview
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Brief Summary
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The proposed site-level randomized trial will test the effectiveness of a work site intervention based on an ecological framework at preventing weight gain among high school employees in Massachusetts. The investigators hypothesis is that the intervention will positively impact healthy dietary patterns and physical activity, perceived organizational commitment, coworker influences, social support, self-efficacy, and self-control, which in turn will positively mediate or moderate the positive associations between the intervention and the primary outcomes (change in weight, BMI, and waist circumference). 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.

Official Title
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School Worksite Weight Gain Prevention Intervention Study

Conditions
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Obesity

Intervention / Treatment
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* Behavioral: Step Ahead
* Behavioral: Basic Intervention


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: work at least 15 hours per week, or approximately half of the school week, only work at one school participating in the study, not be in a leadership position in the school (e.g. principals and vice-principals) be able to stand up speak English plan to be employed at the school for the next 24 months Exclusion Criteria: work less than 15 hours per week work at more than one participating school work in a leadership position (e.g. principal or vice-principal) does not speak English unable to stand up
Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Step Ahead<br>Promotion of weight gain prevention among teachers and staff in public high schools through Step Ahead, a comprehensive intervention targeting three levels suggested by the ecological framework health behavior change: organizational school level, interpersonal level, and individual level. | Behavioral: Step Ahead<br>* Promotion of weight gain prevention among teachers and staff in public high schools through Step Ahead, a comprehensive intervention targeting three levels suggested by the ecological framework health behavior change: organizational school level, interpersonal level, and individual level.<br>|
| Active Comparator: Basic Intervention<br>Promotion of weight gain prevention among teachers and staff in public high schools through receipt of the workbook print materials and access to website similar to the enhanced intervention. | Behavioral: Basic Intervention<br>* Promotion of weight gain prevention among teachers and staff in public high schools through receipt of the workbook print materials and access to website similar to the enhanced intervention.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| High school employee change in weight | Test the effectiveness of a worksite intervention based on an ecological framework at preventing an increase in weight among high school employees in Massachusetts | 24 months post-baseline | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| High school employee change in BMI | Test the effectiveness of a worksite intervention based on an ecological framework at preventing an increase in BMI among high school employees in Massachusetts | 24 months post-baseline | 
| High School employee change in waist circumference | Test the effectiveness of a worksite intervention based on an ecological framework at preventing an increase in waist circumference among high school employees in Massachusetts | 23 months post-baseline | 
| Weight management behaviors | Test the effectiveness of a worksite intervention compared to the control condition on physical activity and healthy eating behaviors among high school employees in Massachusetts. | 24 months post-baseline | 
| High school employee absenteeism | Test the effectiveness of a work site intervention based on an ecological framework at preventing absenteeism among high school employees in Massachusetts. | 24 months post-baseline | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Obesity, Workplace, Intervention, Diet, Exercise