Clinical trial NCT01863056: The Effect of Sit-Stand Workstations on Physical Activity in Sedentary Office Workers
Official title: The Effect of Sit-Stand Workstations on Physical Activity in Sedentary Office Workers: A Randomized Crossover Trial
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Sedentary
Keywords: Sedentary time
Non Exercise Activity
Sit Stand Workstation
Lead sponsor: University of Minnesota
Sponsor class: OTHER
Collaborators: name: Mayo Clinic
First posted: 2013-05-27
Enrollment: 29
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: PREVENTION

Brief 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.


Eligibility criteria: Inclusion Criteria:

* Mostly sedentary (sitting ≥ 4 hour) during the workday.
* Age ≥ 18
* Anticipated using a single computer workstation for 20 hours or more per week

Exclusion Criteria:

* 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

Primary outcomes:
measure: non-exercise activity
timeFrame: 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:
measure: Ecological Momentary Assesment Fatigue, appetite, energy levels Sitting/standing, Fatigue, appetite, energy levels Self-administered web-based ecological momentary assessments
timeFrame: 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
measure: 24 hr Diet recall
timeFrame: Once a week for 4 weeks of control period and 4 weeks of intervention period and the two periods were compared
measure: 24 hour Physical Activity Recall
timeFrame: Once a week for 4 weeks of control period and 4 weeks of intervention period and the two periods were compared
measure: Productivity Survey
timeFrame: Once a week for 4 weeks of control period and 4 weeks of intervention period and the two periods were compared
measure: Stress
timeFrame: Once every two weeks for 4 weeks of control period and 4 weeks of intervention period and the two periods were compared
measure: Focus Group Sessions to Qualitatively ascertain experience with Sit-Stand Desks
timeFrame: End of Study
measure: Individual Interviews to Qualitatively ascertain experience with Sit-Stand Desks
timeFrame: End of control period and end of intervention period
measure: Body composition and fitness
timeFrame: Beginning of control period, end of control period (4 weeks later), beginning of intervention period, and end of intervention period
Other outcomes:
measure: Non-Exercise Activity (1 year follow-up)
timeFrame: 1 Year follow-up after the end of the main study. it will be for 1 week of constant measurement of non-exercise activity.
Locations:
city: Minneapolis
country: United States
facility: Caldrea Inc.
state: Minnesota
Study officials:
affiliation: School of Public Health, University of Minnesota, Minneapolis
name: Mark Pereira, Ph.D.
role: PRINCIPAL_INVESTIGATOR
References:
citation: 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.