NCT00708461

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.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
1,747

participants targeted

Target at P75+ for not_applicable obesity

Timeline
Completed

Started Jan 2006

Longer than P75 for not_applicable obesity

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 1, 2006

Completed
2.5 years until next milestone

First Submitted

Initial submission to the registry

June 27, 2008

Completed
5 days until next milestone

First Posted

Study publicly available on registry

July 2, 2008

Completed
8 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 1, 2009

Completed
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

March 1, 2010

Completed
3.4 years until next milestone

Results Posted

Study results publicly available

July 18, 2013

Completed
Last Updated

November 1, 2019

Status Verified

October 1, 2019

Enrollment Period

3.2 years

First QC Date

June 27, 2008

Results QC Date

December 13, 2011

Last Update Submit

October 30, 2019

Conditions

Keywords

obesityobesity preventionworksiteenvironmentintervention

Outcome Measures

Primary Outcomes (1)

  • Change in Body Mass Index (BMI)

    Assessed in kilograms per meter squared.

    Baseline to 24 months

Study Arms (2)

Worksite Environmental Intervention

EXPERIMENTAL

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

Behavioral: weight gain prevention

No-contact control

NO INTERVENTION

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

Interventions

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.

Also known as: worksite intervention, obesity prevention
Worksite Environmental Intervention

Eligibility Criteria

Age18 Years - 70 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • age 18 or older
  • generally in good health
  • part- or full-time employee in one of the participating worksites

You may not qualify if:

  • work on site \<50% of the time
  • work second or third shift

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Minnesota

Minneapolis, Minnesota, 55454, United States

Location

Related Publications (5)

  • 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.

  • 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.

  • 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.

  • 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.

  • 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.

Related Links

MeSH Terms

Conditions

Obesity

Condition Hierarchy (Ancestors)

OverweightOvernutritionNutrition DisordersNutritional and Metabolic DiseasesBody WeightSigns and SymptomsPathological Conditions, Signs and Symptoms

Limitations and Caveats

The recruitment goal of 6 sites represents only 3% of those initially contacted for participation, or 16% of eligible and interested sites. The design limits power due to the small sample size at the group level.

Results Point of Contact

Title
Jennifer A. Linde, Ph.D.
Organization
University of Minnesota

Study Officials

  • Robert W Jeffery, PhD

    University of Minnesota, Division of Epidemiology and Community Health

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
Yes
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

June 27, 2008

First Posted

July 2, 2008

Study Start

January 1, 2006

Primary Completion

March 1, 2009

Study Completion

March 1, 2010

Last Updated

November 1, 2019

Results First Posted

July 18, 2013

Record last verified: 2019-10

Locations