Overview

This trial is active, not recruiting.

Condition measure increase in activity in sedentary office workers
Treatment sit-stand desk
Sponsor University of Minnesota - Clinical and Translational Science Institute
Collaborator Mayo Clinic
Start date January 2012
End date April 2012
Trial size 29 participants
Trial identifier NCT01863056, SitstandstudyCaldrea2012

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.

United States No locations recruiting
Other Countries No locations recruiting

Study Design

Allocation randomized
Intervention model crossover assignment
Masking open label
Primary purpose prevention
Arm
(Experimental)
Cross-over trial: so this group got the intervention in period 1 and didn't get the intervention in period 2 (serving as control for self).
sit-stand desk
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.
(Experimental)
Cross-over trial: so this group got the intervention in period 2 and didn't get the intervention in period 1 (serving as control for self).
sit-stand desk
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.

Primary Outcomes

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

Secondary Outcomes

Measure
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

Eligibility Criteria

Male or female participants at least 18 years old.

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

Additional Information

Official title The Effect of Sit-Stand Workstations on Physical Activity in Sedentary Office Workers: A Randomized Crossover Trial
Principal investigator Mark Pereira, Ph.D.
Trial information was received from ClinicalTrials.gov and was last updated in May 2013.
Information provided to ClinicalTrials.gov by University of Minnesota - Clinical and Translational Science Institute.