RCT Computer-tailored Intervention on Workplace Sitting

Study Overview
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Brief Summary
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A theory-driven, web-based, computer-tailored advice to influence sitting at work was developed. The study investigated the effects of this computer-tailored intervention to influence workplace sitting on behavioural measures.

Detailed Description
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The study investigated the effects of the theory-driven, web-based, computer-tailored intervention to influence workplace sitting on objectively measured sitting time, standing time and breaks from sitting, as well as self-reported context-specific sitting. The computer-tailored advice was compared to a generic advice and a 'no-advice' control at 1-month and 3-months follow-up. The 'tailored' group received a web-based computer-tailored intervention including personalized feedback and tips on how to reduce and/or interrupt workplace sitting. The 'generic' group received a web-based intervention containing generic information and tips to reduce and/or interrupt workplace sitting. The control group was a waitlist control condition and received the generic intervention after completing all measurements. Participants were recruited from a convenience sample of two companies (university and environmental agency) in Flanders (i.e. northern Dutch-speaking part of Belgium), mainly employing desk-based workers, having more than 100 staff members and each having at least three different worksite locations.

Official Title
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The Effectiveness of a Web-based Computer-tailored Intervention on Workplace Sitting: a Randomized Controlled Trial

Conditions
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Sedentary Lifestyle

Intervention / Treatment
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* Behavioral: Start to stand
* Behavioral: generic advice


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: being employed Exclusion Criteria: not being able to stand

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 70 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Factorial Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: tailored group<br>Received a web-based computer-tailored intervention including personalized feedback and tips on how to reduce and/or interrupt workplace sitting. | Behavioral: Start to stand<br>* web-based computer-tailored intervention including personalized feedback and tips on how to reduce and/or interrupt workplace sitting<br>|
| Active Comparator: generic group<br>Received a web-based intervention containing generic information and tips to reduce and/or interrupt workplace sitting. | Behavioral: generic advice<br>* general, non-tailored web-based generic advice with tips<br>|
| No Intervention: control group<br>A waitlist control condition and received the generic intervention after completing all measurements | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| sitting time | objectively measured sitting time with ActivPAL | one week | 
| self-reported context-specific sitting time | self-reported context-specific sitting time with WSQ questionnaire | one week | 
| standing time | objectively measured standing time with ActivPAL | one week | 
| breaks from sitting | objectively measured breaks from sitting with ActivPAL | one week | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| psychosocial correlates of sitting | psychosocial correlates of sitting with questionnaire | one week |