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| ID | Type | Description | Link |
|---|---|---|---|
| 5R01DK067362 | U.S. NIH Grant/Contract | View source |
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| Name | Class |
|---|---|
| National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) | NIH |
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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.
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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| 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 |
|
| No-contact control | No Intervention | No-treatment control condition. Worksites were offered program materials upon completion of programs at intervention sites. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| weight gain prevention | Behavioral |
|
| Measure | Description | Time Frame |
|---|---|---|
| Change in Body Mass Index (BMI) | Assessed in kilograms per meter squared. | Baseline to 24 months |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Robert W Jeffery, PhD | University of Minnesota, Division of Epidemiology and Community Health | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of Minnesota | Minneapolis | Minnesota | 55454 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 23108493 | Result | 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. | |
| 22340088 | Result | 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. |
| Label | URL |
|---|---|
| HealthWorks is a study housed in the University of Minnesota Obesity Prevention Center. | View source |
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A company-wide email was sent to eligible employees at all sites, describing the study and the partnership with the University. Employees were notified that a study staff member would contact them about the project within the next two weeks and were given the option to call study staff in advance to opt out or to enroll in the study.
Participants were recruited at worksites between January 2006 and April 2007. Human resources departments provided worksite contact information for all eligible employees; these email addresses and phone numbers were used for recruitment contact purposes.
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| ID | Title | Description |
|---|---|---|
| FG000 | 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 |
| FG001 | No-contact Control | No-treatment control condition. Worksites were offered program materials upon completion of programs at intervention sites. |
| Title | Milestones | Reasons Not Completed | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall Study |
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|
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| ID | Title | Description |
|---|---|---|
| BG000 | 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 |
| BG001 | No-contact Control |
| Units | Counts |
|---|---|
| Participants |
|
| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes |
|---|---|---|---|---|---|---|---|---|---|
| Age, Categorical | Count of Participants |
| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | Change in Body Mass Index (BMI) | Assessed in kilograms per meter squared. | Participants with complete data at baseline and two years, and those who were not pregnant at either time, were retained for analysis. | Posted | Least Squares Mean | Standard Error | kilograms per meter squared | Baseline to 24 months |
|
Adverse events were tracked for the duration of the study (2 years at each site).
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | 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 |
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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.
| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| Jennifer A. Linde, Ph.D. | University of Minnesota | 612-624-0065 | linde074@umn.edu |
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| ID | Term |
|---|---|
| D009765 | Obesity |
| ID | Term |
|---|---|
| D050177 | Overweight |
| D044343 | Overnutrition |
| D009748 | Nutrition Disorders |
| D009750 | Nutritional and Metabolic Diseases |
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| 21952267 | Result | 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. |
| 21732212 | Result | 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. |
| 23979097 | Derived | 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. |
| left workforce |
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No-treatment control condition. Worksites were offered program materials upon completion of programs at intervention sites.
| BG002 | Total | Total of all reporting groups |
| Participants |
|
| Age, Continuous | Mean | Standard Deviation | years |
|
| Sex: Female, Male | Count of Participants | Participants |
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| Region of Enrollment | Number | participants |
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|
|
|
| 0 |
| 752 |
| 0 |
| 752 |
| EG001 | No-contact Control | No-treatment control condition. Worksites were offered program materials upon completion of programs at intervention sites. | 0 | 995 | 0 | 995 |
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| D001835 |
| Body Weight |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |