Environmental Intervention for Weight Gain Prevention

NCT ID: NCT00708461

Last Updated: 2019-11-01

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 1747 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2006-01-31
• Study Completion Date: 2010-03-31

Brief 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.

Detailed 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.

Conditions

Obesity

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: NONE

Study Groups

Worksite Environmental Intervention

Changes to healthy food availability, physical activity opportunities and promotion, body weight scale access, and media enhancements to target weight gain prevention

Group Type: EXPERIMENTAL

weight gain prevention

Intervention Type: BEHAVIORAL

1. 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.

2. 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.

3. Changes to the environment to increase cues and incentives for regular weight monitoring by providing scales at convenient locations.

4. Changes in the informational environment that increase frequency of exposure of the employee population to accurate information about healthy food and activity choices.

No-contact control

No-treatment control condition. Worksites were offered program materials upon completion of programs at intervention sites.

Group Type: NO_INTERVENTION

No interventions assigned to this group

Interventions

weight gain prevention

1. 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.

2. 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.

3. Changes to the environment to increase cues and incentives for regular weight monitoring by providing scales at convenient locations.

4. Changes in the informational environment that increase frequency of exposure of the employee population to accurate information about healthy food and activity choices.

Intervention Type: BEHAVIORAL

Other Intervention Names

worksite intervention; obesity prevention

Eligibility Criteria

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

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 70 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

NIH

Sponsor Role: collaborator

University of Minnesota

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Robert W Jeffery, PhD

Role: PRINCIPAL_INVESTIGATOR

University of Minnesota, Division of Epidemiology and Community Health

Locations

University of Minnesota

Minneapolis, Minnesota, United States

Countries

United States

References

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.

Reference Type: RESULT

PMID: 23108493 (View on PubMed)

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. 2012 Feb 16;9:14. doi: 10.1186/1479-5868-9-14.

Reference Type: RESULT

PMID: 22340088 (View on PubMed)

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. doi: 10.1123/jpah.9.6.849. Epub 2011 Jul 29.

Reference Type: RESULT

PMID: 21952267 (View on PubMed)

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.

Reference Type: RESULT

PMID: 21732212 (View on PubMed)

Graham DJ, Linde JA, Cousins JM, Jeffery RW. Environmental modifications and 2-year measured and self-reported stair-use: a worksite randomized trial. J Prim Prev. 2013 Dec;34(6):413-22. doi: 10.1007/s10935-013-0323-2.

Reference Type: DERIVED

PMID: 23979097 (View on PubMed)

Related Links

http://www.ahc.umn.edu/opc/research/OPC_Currently_Funded/home.html

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

Other Identifiers

5R01DK067362

Identifier Type: NIH

Identifier Source: secondary_id

View Link

0408S62609

Identifier Type: -

Identifier Source: org_study_id