OBJECTIVE: This study was conducted to determine whether installation of sit-stand desks (SSDs) could lead to decreased sitting time during the workday among sedentary office workers.<br /><br />METHODS: A randomized cross-over trial was conducted from January to April, 2012 at a business in Minneapolis. 28 (nine men, 26 full-time) sedentary office workers took part in a 4 week intervention period which included the use of SSDs to gradually replace 50% of sitting time with standing during the workday. Physical activity was the primary outcome. Mood, energy level, fatigue, appetite, dietary intake, and productivity were explored as secondary outcomes.<br /><br />RESULTS: The intervention reduced sitting time at work by 21% (95% CI 18%-25%) and sedentary time by 4.8 min/work-hr (95% CI 4.1-5.4 min/work-hr). For a 40 h work-week, this translates into replacement of 8 h of sitting time with standing and sedentary time being reduced by 3.2 h. Activity level during non-work hours did not change. The intervention also increased overall sense of well-being, energy, decreased fatigue, had no impact on productivity, and reduced appetite and dietary intake. The workstations were popular with the participants.<br /><br />CONCLUSION: The SSD intervention was successful in increasing work-time activity level, without changing activity level during non-work hours.
Dutta, N., Koepp, G. A., Stovitz, S. D., Levine, J. A., & Pereira, M. A. (2014). Using sit-stand workstations to decrease sedentary time in office workers: A randomized crossover trial. International Journal of Environmental Research and Public Health, 11(7), 6653–6665. https://doi.org/10.3390/ijerph110706653