SedentaryNCT01863056
The Effect of Sit-Stand Workstations on Physical Activity in Sedentary Office Workers
A study testing Sit-Stand Desk in people with Sedentary, run by University of Minnesota at 1 site in United States.
Trial summary
The purpose of this study was to determine whether the installation of sit-stand work stations could lead to decreased sedentary time and increased physical activity during the workday among sedentary office workers. Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Sedentary
- What is being tested?
- Sit-Stand Desk
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 29 participants
- Where
- 1 siteUnited States
- Study dates
- Jan 2012to Jul 2013
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Mostly sedentary (sitting ≥ 4 hour) during the workday.
- Age ≥ 18
- Anticipated using a single computer workstation for 20 hours or more per week
Who cannot join
- Unable to stand for at least two hours per workday (two hours over the whole workday, not consecutively)
- Reported severe musculoskeletal symptoms, specifically lower extremity or lower back pain.
- Diagnosed with or under treatment for diabetes, heart disease, cancer, orthostatic hypertension, varicose vein, autoimmune disease, or other chronic diseases.
- Pregnant women
Trial locations and contacts
1 site in 1 country.
About this study
Official title: The Effect of Sit-Stand Workstations on Physical Activity in Sedentary Office Workers: A Randomized Crossover Trial
The purpose of this study was to determine whether the installation of sit-stand work stations could lead to decreased sedentary time and increased physical activity during the workday among sedentary office workers.
- Conditions
- Sedentary
- Being tested
- Sit-Stand Desk
- Keywords
- Sedentary time, Non Exercise Activity, Sit Stand Workstation
- Medical subject headings
- Sedentary Behavior
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Sit-Stand DeskOther
Subjects were asked to participate in the study for a total period of three months. Based on randomization, either the first or third month involved the active intervention to use an adjustable sit-stand desk. The other two months required the subjects to follow their usual work routine without the adjustable sit-stand desk. The control period month involved all the same measurements as the active intervention month, whereas the washout period, which was the 2nd (middle) month, did not involve any measurement and there was no contact with the subjects during the washout month.
| Study group | Role | What they receive |
|---|---|---|
| Sit-Stand Desk | Experimental | Cross-over trial: so one group got the intervention in period 1 and didn't get the intervention in period 2 (serving as control for self in period 2) and the other group got the intervention in period 2 and didn't get the intervention in period 1 (serving as control for self in period 1). Receives: Other: Sit-Stand Desk |
| Control | No intervention | Used normal work desk which only allows working sitting down |
What is being measured
The primary outcome is the main question the study is designed to answer.
non-exercise activity
Non-exercise activity was meausred by triple axis accelerometers during all waking hours in the control period (1 month) and in the intervention period (1 month). The two periods were then compared for each subject.
Sitting time was also measured subjectively using a validated questionnaire: occupational sitting and physical activity questinnarie (OSPAQ)
Hypothesis: Amount of time spent standing, walking, and other components of non-exercise activity will be higher during the standing intervention period relative to the control period (usual sitting).
Measured: Measured constantly during the entire control period and measured constantly during the entire intervention period and the two periods were compared to determine change in non-exercise activity
Secondary outcomes (8)
Ecological Momentary Assesment Fatigue, appetite, energy levels Sitting/standing, Fatigue, appetite, energy levels Self-administered web-based ecological momentary assessments
Sitting/standing,Fatigue, appetite, energy levels etc. were measured via quick ecological momentary assessment surveys. These are all part of one short questionnaire that participants filled out twice a day during the study.
Hypothesis: Self-reported energy levels will be higher and fatigue will be lower for the standing intervention period compared to control.
Measured: Twice per day during workdays (5 days a week) for 4 weeks of control period and 4 weeks of intervention period and the two periods were compared
24 hr Diet recall
Self-administered web-based 24 hour dietary recall Hypothesis: Energy intake will not be higher and eating behaviors will not be different (e.g., meal/snack size, frequency, and composition) between the standing intervention periods and control.
Measured: Once a week for 4 weeks of control period and 4 weeks of intervention period and the two periods were compared
24 hour Physical Activity Recall
On a random day a week, subjects filled out what they did for every 15 minute increment for the last 24 hours.
Measured: Once a week for 4 weeks of control period and 4 weeks of intervention period and the two periods were compared
Productivity Survey
The Work Productivity and Activity Impairment Questionnaire was used to assess productivity in the previous week.
Measured: Once a week for 4 weeks of control period and 4 weeks of intervention period and the two periods were compared
Stress
The Perceived Stress Scale was used to measure stress level every two weeks.
Measured: Once every two weeks for 4 weeks of control period and 4 weeks of intervention period and the two periods were compared
Focus Group Sessions to Qualitatively ascertain experience with Sit-Stand Desks
Focus group sessions were conducted to ascertain the experience of switching to sit-stand workstations for people who participated in the study and for people who did not participate in the study (what it was like to have co-workers use sit-stand desks).
This is a qualitative measure without hard outcomes. Questions were asked about overall experience with sit-stand desks (SSDs), benefits and drawbacks of use, whether they see themselves using the SSDs regularly in the long run, things they liked, things they did not like, health effects of standing, and impact of standing on interaction with coworkers.
Measured: End of Study
Individual Interviews to Qualitatively ascertain experience with Sit-Stand Desks
Individual interviews were conducted to ascertain the experience of switching to a sit-stand workstation.
This is a qualitative measure without hard outcomes. Questions were asked about overall experience with sit-stand desks (SSDs), benefits and drawbacks of use, whether they see themselves using the SSDs regularly in the long run, things they liked, things they did not like, health effects of standing, and impact of standing on interaction with coworkers.
Measured: End of control period and end of intervention period
Body composition and fitness
Body composition (DXA scan), height, weight, waist-to-hip-ratio, and cardiovascular fitness (treadmill walk and step test) were performed to measure physical changes.
Women without a history of histerectomy underwent urine pregnancy test before going for the DXA scan. baseline fitness and health status of all participants were assessed by a study physician to ensure that subjects were able to participate in the fitness tests.
Measured: Beginning of control period, end of control period (4 weeks later), beginning of intervention period, and end of intervention period
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted27 May 2013 (estimated)
- Study startJan 2012
- Primary completionApr 2012
- Study completionJul 2013
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for SedentaryStudies of the same condition, open and under way.
- More trials run by University of MinnesotaThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Enrolment
- 29 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Minnesota
- Sponsor type
- University, hospital or other
- Collaborators
- Mayo Clinic
- Responsible party
- Sponsor
- Investigators
- Mark Pereira, Ph.D., Principal investigator, School of Public Health, University of Minnesota, Minneapolis
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01863056
- Sponsor's protocol ID
- 1112M07302
- Status last verified
- Apr 2023
- First submitted
- 24 Apr 2013
- Last updated
- 7 Apr 2023
- Results posted
- No
- Data monitoring committee
- No
Publications
Dutta N, Walton T, Pereira MA. Experience of switching from a traditional sitting workstation to a sit-stand workstation in sedentary office workers. Work. 2015;52(1):83-9. doi: 10.3233/WOR-141971.
PubMed 25425587
Study at a glance
From the registry record, last updated by the sponsor on 7 Apr 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Effect of Sit-Stand Workstations on Physical Activity in Sedentary Office Workers: A Randomized Crossover Trial
- ClinicalTrials.gov ID
- NCT01863056
- Acronym / sponsor ID
- 1112M07302
- Conditions
- Sedentary
- Keywords
- Sedentary time, Non Exercise Activity, Sit Stand Workstation
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 29 participants (actual)
- Lead sponsor
- University of MinnesotaUniversity, hospital or other
- Collaborators
- Mayo Clinic
- Study start
- Jan 2012
- Primary completion
- Apr 2012 (actual)
- Study completion
- Jul 2013 (actual)
- First posted
- 27 May 2013 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study was to determine whether the installation of sit-stand work stations could lead to decreased sedentary time and increased physical activity during the workday among sedentary office workers.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Sit-Stand Desk | Experimental | Other: Sit-Stand DeskCross-over trial: so one group got the intervention in period 1 and didn't get the intervention in period 2 (serving as control for self in period 2) and the other group got the intervention in period 2 and didn't get the intervention in period 1 (serving as control for self in period 1). |
| Control | No intervention | –Used normal work desk which only allows working sitting down |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Mostly sedentary (sitting ≥ 4 hour) during the workday.
- Age ≥ 18
- Anticipated using a single computer workstation for 20 hours or more per week
Key exclusion criteria (4 listed)
- Unable to stand for at least two hours per workday (two hours over the whole workday, not consecutively)
- Reported severe musculoskeletal symptoms, specifically lower extremity or lower back pain.
- Diagnosed with or under treatment for diabetes, heart disease, cancer, orthostatic hypertension, varicose vein, autoimmune disease, or other chronic diseases.
- Pregnant women
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Sit-Stand DeskSubjects were asked to participate in the study for a total period of three months. Based on randomization, either the first or third month involved the active intervention to use an adjustable sit-stand desk. The other two months required the subjects to follow their usual work routine without the adjustable sit-stand desk. The control period month involved all the same measurements as the active intervention month, whereas the washout period, which was the 2nd (middle) month, did not involve any measurement and there was no contact with the subjects during the washout month. | Other | Sit-Stand Desk |
Primary outcome
non-exercise activity
Time frame: Measured constantly during the entire control period and measured constantly during the entire intervention period and the two periods were compared to determine change in non-exercise activity
Non-exercise activity was meausred by triple axis accelerometers during all waking hours in the control period (1 month) and in the intervention period (1 month). The two periods were then compared for each subject. Sitting time was also measured subjectively using a validated questionnaire: occupational sitting and physical activity questinnarie (OSPAQ) Hypothesis: Amount of time spent standing, walking, and other components of non-exercise activity will be higher during the standing intervention period relative to the control period (usual sitting).
8 secondary outcomes
Ecological Momentary Assesment Fatigue, appetite, energy levels Sitting/standing, Fatigue, appetite, energy levels Self-administered web-based ecological momentary assessments
Time frame: Twice per day during workdays (5 days a week) for 4 weeks of control period and 4 weeks of intervention period and the two periods were compared
24 hr Diet recall
Time frame: Once a week for 4 weeks of control period and 4 weeks of intervention period and the two periods were compared
24 hour Physical Activity Recall
Time frame: Once a week for 4 weeks of control period and 4 weeks of intervention period and the two periods were compared
Productivity Survey
Time frame: Once a week for 4 weeks of control period and 4 weeks of intervention period and the two periods were compared
Stress
Time frame: Once every two weeks for 4 weeks of control period and 4 weeks of intervention period and the two periods were compared
Focus Group Sessions to Qualitatively ascertain experience with Sit-Stand Desks
Time frame: End of Study
Individual Interviews to Qualitatively ascertain experience with Sit-Stand Desks
Time frame: End of control period and end of intervention period
Body composition and fitness
Time frame: Beginning of control period, end of control period (4 weeks later), beginning of intervention period, and end of intervention period
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 7 Apr 2023.
- Derived from this study: PubMed 25425587Dutta N, Walton T, Pereira MA. Experience of switching from a traditional sitting workstation to a sit-stand workstation in sedentary office workers. Work. 2015;52(1):83-9. doi: 10.3233/WOR-141971.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Mark Pereira, Ph.D. principal investigator
School of Public Health, University of Minnesota, Minneapolis
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Sit-Stand Desk in people with Sedentary, run by University of Minnesota at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 7 Apr 2023. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
non-exercise activity (time frame: Measured constantly during the entire control period and measured constantly during the entire intervention period and the two periods were compared to determine change in non-exercise activity). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01863056, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 7 Apr 2023.