Standing Behavior After Installation of Height-Adjustable Desks

Study Overview
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Brief Summary
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The purpose of this research study is to determine whether height-adjustable desks change sitting and standing time at work and away from work, engery expenditure, dietary intake, and body composition. Intermittent peroids of standing made possible by height-adjustable desks may help to impart long-term health benefits.

Official Title
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Adoption of Standing Behavior After Installation of Height-Adjustable Desks

Conditions
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Office Workers, Sitting Occupations

Intervention / Treatment
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* Other: Height-Adjustable Desk Intallation in Office


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Being one of the 18 scientists and support staff who have sedentary jobs Voluntarily make the choice to replace their current fixed-height sitting desk for a sit-to-stand height-adjustable desk Consents to study conditions Exclusion Criteria: Cannot stand for any type of health of orthopedic reasons Do not work fulltime Pregnant at baseline or become pregnant during the study

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 99 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Standing desk<br>Installation of standing desk | Other: Height-Adjustable Desk Intallation in Office<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Workplace sitting time to be reduced | Workplace sitting time will be reduced by 60 minutes across an 8 hour work day and this time will be replaced by standing. | 12 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Total sitting time will be reduced | Total sitting time will be reduced by 30 minutes across a 16 hour day. Decreased sitting during the weekday will not be fully compensated for by increased sitting during nonwork hours. | 12 months | 
| Energy expenditure will increase | Energy expenditure will increase across an 8 hour workday and a 16 hour day. | 12 months | 
| Health behavior change of consuming a lower fat diet | The non-targeted health behavior of consuming a lower fat diet will co-occur with standing behavior. Increases in standing behavior will be inversely correlated with changes in total dietary fat intake. | 12 months | 
| Body weight, BMI, and fat mass reduction | Body weight, BMI, and fast mass will be reduced by 6 months. | 6 months | 
| Changes in musculoskeletal symptoms | Increases in standing behavior will be correlated with changes in musculoskeletal symptoms. | 12 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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height-adjustable desk, office workers, sitting occupations, energy expenditure, BMI, Weight, Lower fat diet