Environmental Intervention for Weight Gain Prevention

Obesity Clinical Trial

— HealthWorks  

Official title:

Environmental Intervention for Weight Gain Prevention

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00708461
• Other study ID #: 0408S62609
• Secondary ID: 5R01DK067362
• Status: Completed
• Phase: N/A
• Start date: January 2006
• Est. completion date: March 2010

Study information

• Verified date: October 2019
• Source: University of Minnesota
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The primary aim of this research is to evaluate the efficacy of a multicomponent worksite-based, environmental intervention in reducing weight increase and obesity over time in working adults.

Description:

This study is a randomized trial designed to evaluate the effectiveness of a multi-component worksite intervention with strong environmental components to prevent weight gain. Six worksites will be randomized to either an intervention or a no-treatment control group. The intervention will be comprised of 1) changing the availability, portion sizes, and prices of foods and beverages sold to employees in their worksites in ways that encourage healthier food choices; 2) increasing the availability of physical activity opportunities at the worksite by implementing walking programs and increasing stairwell access and attractiveness; 3) placing scales in the work environment to encourage body weight monitoring and to enable workers to set goals for their weight; and 4) to provide educational materials to all employees to make them aware of the environmental intervention and of behavioral practices likely to be effective in preventing weight gain. The intervention will be implemented for a 2-year period in each intervention site. Effectiveness will be evaluated by assessing body weight, eating behavior and physical activity in a cohort of employees in both control and intervention sites at baseline and again 2 years later. Weight trends in these populations will also be compared to data from national and state-level annual surveys of weight in representative population samples. Data will be collected on the effects of specific intervention components via aggregate measures of food choice and physical activity.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 1747
• Est. completion date: March 2010
• Est. primary completion date: March 2009
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 70 Years

Eligibility

Inclusion Criteria:

• age 18 or older

• generally in good health

• part- or full-time employee in one of the participating worksites

Exclusion Criteria:

• work on site <50% of the time

• work second or third shift

Related Conditions & MeSH terms

• Obesity
• Weight Gain

Intervention

Behavioral:
• weight gain prevention
Changes in the food environment that increase the availability of healthy foods and beverages, reduce food and beverage portion sizes, reduce prices on healthy food items, and increase prices on less healthy food items. Changes in the activity environment that increase cues and incentives for walking at work and at home, using stairs, and to increase exposure of employees to information about active recreational opportunities at work and at home. Changes to the environment to increase cues and incentives for regular weight monitoring by providing scales at convenient locations. Changes in the informational environment that increase frequency of exposure of the employee population to accurate information about healthy food and activity choices.

Locations

Country	Name	City	State
United States	University of Minnesota	Minneapolis	Minnesota

Sponsors (2)

Lead Sponsor	Collaborator
University of Minnesota	National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Country where clinical trial is conducted

United States, 

References & Publications (4)

Linde JA, Nygaard KE, MacLehose RF, Mitchell NR, Harnack LJ, Cousins JM, Graham DJ, Jeffery RW. HealthWorks: results of a multi-component group-randomized worksite environmental intervention trial for weight gain prevention. Int J Behav Nutr Phys Act. 201 — View Citation

VanWormer JJ, Linde JA, Harnack LJ, Stovitz SD, Jeffery RW. Is baseline physical activity a determinant of participation in worksite walking clubs? Data from the HealthWorks Trial. J Phys Act Health. 2012 Aug;9(6):849-56. Epub 2011 Jul 29. — View Citation

VanWormer JJ, Linde JA, Harnack LJ, Stovitz SD, Jeffery RW. Self-weighing frequency is associated with weight gain prevention over 2 years among working adults. Int J Behav Med. 2012 Sep;19(3):351-8. doi: 10.1007/s12529-011-9178-1. — View Citation

VanWormer JJ, Linde JA, Harnack LJ, Stovitz SD, Jeffery RW. Weight change and workplace absenteeism in the HealthWorks study. Obes Facts. 2012;5(5):745-52. doi: 10.1159/000345119. Epub 2012 Oct 24. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Change in Body Mass Index (BMI)	Assessed in kilograms per meter squared.	Baseline to 24 months

External Links

•   HealthWorks is a study housed in the University of Minnesota Obesity Prevention Center.