---
title: School Worksite Weight Gain Prevention Intervention Study
nct_id: NCT01467284
overall_status: COMPLETED
phase: PHASE2, PHASE3
sponsor: University of Massachusetts, Worcester
study_type: INTERVENTIONAL
primary_condition: Obesity
countries: United States
canonical_url: "https://parkinsonspathways.com/agent/trials/NCT01467284.md"
clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT01467284"
ct_last_update_post_date: 2014-07-18
last_seen_at: "2026-05-12T06:41:19.184Z"
source: ClinicalTrials.gov (mirrored, no enrichment)
---
# School Worksite Weight Gain Prevention Intervention Study

**NCT ID:** [NCT01467284](https://clinicaltrials.gov/study/NCT01467284)

## Key Facts

- **Status:** COMPLETED
- **Phase:** PHASE2, PHASE3
- **Study Type:** INTERVENTIONAL
- **Target Enrollment:** 844
- **Lead Sponsor:** University of Massachusetts, Worcester
- **Conditions:** Obesity
- **Start Date:** 2009-07
- **Completion Date:** 2014-06
- **CT.gov Last Update:** 2014-07-18

## Brief Summary

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.

## Eligibility

- **Sex:** ALL
- **Healthy Volunteers:** Yes

```
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
```

## Arms

- **Step Ahead** (EXPERIMENTAL) — 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.
- **Basic Intervention** (ACTIVE_COMPARATOR) — 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.

## Interventions

- **Step Ahead** (BEHAVIORAL) — 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.
- **Basic Intervention** (BEHAVIORAL) — 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.

## Primary Outcomes

- **High school employee change in weight** _(time frame: 24 months post-baseline)_ — Test the effectiveness of a worksite intervention based on an ecological framework at preventing an increase in weight among high school employees in Massachusetts

## Secondary Outcomes

- **High school employee change in BMI** _(time frame: 24 months post-baseline)_
- **High School employee change in waist circumference** _(time frame: 23 months post-baseline)_
- **Weight management behaviors** _(time frame: 24 months post-baseline)_
- **High school employee absenteeism** _(time frame: 24 months post-baseline)_

## Locations (1)

- University of Massachusetts Medical School, Worcester, Massachusetts, United States

## Recent Field Changes (last 30 days)

- `status.overallStatus` — added _(2026-05-12)_
- `status.primaryCompletionDate` — added _(2026-05-12)_
- `status.completionDate` — added _(2026-05-12)_
- `status.lastUpdatePostDate` — added _(2026-05-12)_
- `design.phases` — added _(2026-05-12)_
- `design.enrollmentCount` — added _(2026-05-12)_
- `eligibility.criteria` — added _(2026-05-12)_
- `eligibility.sex` — added _(2026-05-12)_
- `outcomes.primary` — added _(2026-05-12)_
- `outcomes.secondary` — added _(2026-05-12)_
- `armsInterventions.arms` — added _(2026-05-12)_
- `armsInterventions.interventions` — added _(2026-05-12)_
- `sponsor.lead` — added _(2026-05-12)_
- `results.hasResults` — added _(2026-05-12)_
- `locations.university of massachusetts medical school|worcester|massachusetts|united states` — added _(2026-05-12)_

---

*Canonical: https://parkinsonspathways.com/agent/trials/NCT01467284.md*  
*Source data (authoritative): https://clinicaltrials.gov/study/NCT01467284*  
*This page is a raw mirror with no AI summary, no editorial enrichment, and no Parkinson's-specific filtering.*