Alternating Sitting and Standing Increases the Workplace Energy Expenditure of Overweight Adults

J Phys Act Health. 2016 Jan;13(1):24-9. doi: 10.1123/jpah.2014-0420. Epub 2015 Apr 14.


Background: To determine whether alternating bouts of sitting and standing at work influences daily workplace energy expenditure (EE).

Methods: Twenty-three overweight/obese office workers (mean ± SD; age: 48.2 ± 7.9 y, body mass index: 29.6 ± 4.0 kg/m2) undertook two 5-day experimental conditions in an equal, randomized order. Participants wore a "metabolic armband" (SenseWear Armband Mini) to estimate daily workplace EE (KJ/8 h) while working (1) in a seated work posture (SIT condition) or (2) alternating between a standing and seated work posture every 30 minutes using a sit-stand workstation (STAND-SIT condition). To assess the validity of the metabolic armband, a criterion measure of acute EE (KJ/min; indirect calorimetry) was performed on day 4 of each condition.

Results: Standing to work acutely increased EE by 0.7 [95% CI 0.3-1.0] KJ/min (13%), relative to sitting (P = .002). Compared with indirect calorimetry, the metabolic armband provided a valid estimate of EE while standing to work (mean bias: 0.1 [-0.3 to 0.4] KJ/min) but modestly overestimated EE while sitting (P = .005). Daily workplace EE was greatest during the STAND-SIT condition (mean condition difference [95% CI]: 76 [8-144] KJ/8-h workday, P = .03).

Conclusions: Intermittent standing at work can modestly increase daily workplace EE compared with seated work in overweight/obese office workers.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Case-Control Studies
  • Energy Metabolism / physiology*
  • Female
  • Humans
  • Male
  • Middle Aged
  • Overweight / therapy*
  • Sedentary Behavior
  • Workplace / psychology*

Associated data

  • ANZCTR/ACTRN12611000632998