Office workers are one of the most sedentary populations, spending 70-85% of their time at work sitting. A recent study at the National Health Service Trust in England was comprised of 146 office worker subjects, 77 using standing desks and 69 using sitting desks. Testing was done in many physical and psychological areas at the 3 month, 6 month, and 12 month mark. Most positive results were reported at 12 months with improvement in job performance, work engagement, occupational fatigue, and psychological health. It appears that continued use of the standing desk over longer periods of time produces more positive results.
For the complete study results – https://www.bmj.com/content/363/bmj.k3870