Exploring Work-Time Affective States Through Ecological Momentary Assessment in an Office-Based Intervention to Reduce Occupational Sitting.

BACKGROUND: The aim of this study was to examine whether a low-cost standing desk intervention that reduced occupational sitting was associated with changes in work-time cognitive-affective states in real time using ecological momentary assessments at the start and end of the trial. METHODS: Forty-one office employees (91.7% female, mean age = 39.8 [10.1] y) were randomized to receive a low-cost standing desk or a waitlist control. Participants received 5 surveys each day for 5 workdays via smartphone application prior to randomization and at trial's end. Ecological momentary assessment assessed current work-time psychological states (valence and arousal, stress, fatigue, and perceived productivity). Multilevel models assessed whether changes in work-time outcomes over the course of the intervention were significantly different between treatment groups. RESULTS: There were no significant differences in outcomes between the groups except for fatigue, with the control group reporting a significant decrease in daily fatigue following the intervention (P < .001). The intervention group reported no significant changes in any of the work-time outcomes across the study period (P > .05). CONCLUSIONS: A low-cost standing desk intervention to reduce occupational sedentary behavior did not negatively impact work-time outcomes such as productivity and fatigue in the short term.

Impact of a low-cost standing desk on reducing workplace sitting (StandUP UBC): A randomised controlled trial.

Sit-stand desks can reduce occupational sitting time, however, their cost can limit scalability. The purpose of this study was to evaluate the impact of a low-cost standing desk on objectively-measured occupational sitting and prolonged sitting bouts over 3- and 6-months. Secondary outcomes included self-report work engagement and occupational fatigue. Forty-eight office employees (91.7% female, Mage = 39.8 ±â€¯10.1) were randomized to receive a low-cost standing desk or to a control group. At 3-months, the intervention group sat 0.7 h (42min) less at work compared to the control group; F(1, 45) = 5.90, partial η2 = 0.12, p = .019. The effect was small, yet comparable to findings from studies using costlier alternatives. However, these reductions were not maintained at 6-months. No changes in prolonged sitting bouts or secondary outcomes were found. There is some potential for low-cost standing desk converters as a scalable workplace health intervention. TRIAL REGISTRATION: ClinicalTrials.gov, NCT03375749, Registered 18 December 2017, https://clinicaltrials.gov/ct2/show/NCT03375749?term=NCT03375749&rank=1.