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One-year follow-up of a sit-stand workstation intervention to decrease sedentary time in office workers |
Dutta N, Walton T, Pereira MA |
Preventive Medicine Reports 2019 Mar;13:277-280 |
clinical trial |
3/10 [Eligibility criteria: Yes; Random allocation: No; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed* |
BACKGROUND: Prolonged sedentary time is associated with adverse health outcomes, after controlling for the role of moderate-to-vigorous physical activity. We previously reported on a four-week randomized trial using a sit-stand desk (SSD) intervention that decreased sedentary time at work without changing activity level during non-work hours. PURPOSE: The purpose of this study was to measure the impact of the SSD on sitting time and activity level one year after the original intervention. METHODS: A pre-post design was used where the control period from the original study was regarded as "pre" and the measurements made in the follow-up study as "post". The follow-up study was conducted in the same office workers over a two-week period in June 2013. RESULTS: Fifteen out of the 23 participants took part in the follow-up study. Self-reported sitting time during work-hours was decreased by 22% (95% CI 15% to 29%; p < 0.001), replaced almost entirely by standing. Activity measured by Gruve accelerometer during work-hours were significantly higher in the one-year follow-up period compared to baseline (+24,748AU/h; 95% CI 7150 to 42,347; p < 0.01). Sedentary time during work-hours was decreased by 0.77min per work-hour (95% CI -1.88 to 0.33min/h; p = 0.17). Qualitative findings through focus group sessions suggested the workers had overall favorable experiences with the SSDs without negatively impacting productivity. CONCLUSION: One year following the original intervention, participants continue to have increased activity and decreased sedentary time at work with the use of SSDs.
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