Chau Josephine Y, Sukala William, Fedel Karla, Do Anna, Engelen Lina, Kingham Megan, Sainsbury Amanda, Bauman Adrian E
Prevention Research Collaboration, School of Public Health, Sydney Medical School, Charles Perkins Centre, University of Sydney, Sydney, Australia.
School of Health and Human Sciences, Southern Cross University, Lismore, Australia.
Prev Med Rep. 2015 Dec 12;3:68-74. doi: 10.1016/j.pmedr.2015.12.003. eCollection 2016 Jun.
This study evaluated the effects of sit-stand desks on workers' objectively and subjectively assessed sitting, physical activity, and productivity. This quasi-experimental study involved one intervention group (n = 16) and one comparison group (n = 15). Participants were call center employees from two job-matched teams at a large telecommunications company in Sydney, Australia (45% female, 33 ± 11 years old). Intervention participants received a sit-stand desk, brief training, and daily e-mail reminders to stand up more frequently for the first 2 weeks post-installation. Control participants carried out their usual work duties at seated desks. Primary outcomes were workday sitting and physical activity assessed using ActivPAL or ActiGraph devices and self-report questionnaires. Productivity outcomes were company-specific objective metrics (e.g., hold time, talking time, absenteeism) and subjective measures. Measurements were taken at baseline, 1, 4, and 19 weeks post-installation. Intervention participants increased standing time after 1 week (+ 73 min/workday (95% CI: 22, 123)) and 4 weeks (+ 96 min/workday (95% CI: 41, 150)) post-intervention, while control group showed no changes. Between-group differences in standing time at one and 4 weeks were + 78 (95% CI: 9, 147) and + 95 min/workday (95% CI: 15, 174), respectively. Sitting time in the intervention group changed by - 64 (95% CI: - 125, - 2), - 76 (95% CI: - 142, - 11), and - 100 min/workday (95% CI: - 172, - 29) at 1, 4, and 19 weeks post-installation, respectively, while the control group showed no changes. No changes were observed in productivity outcomes from baseline to follow-up in either group. Sit-stand desks can increase standing time at work in call center workers without reducing productivity.
本研究评估了升降桌对员工客观和主观评估的坐姿、身体活动及工作效率的影响。这项准实验研究包括一个干预组（n = 16）和一个对照组（n = 15）。参与者是澳大利亚悉尼一家大型电信公司两个工作匹配团队的客服中心员工（45%为女性，年龄33±11岁）。干预组参与者在安装升降桌后的前两周收到一张升降桌、简短培训以及每日电子邮件提醒，提醒他们更频繁地站立。对照组参与者在固定座位上履行日常工作职责。主要结果是使用ActivPAL或ActiGraph设备及自我报告问卷评估的工作日坐姿和身体活动情况。工作效率结果是公司特定的客观指标（如保持通话时间、通话时间、旷工情况）和主观测量结果。在安装后的基线、第1、4和19周进行测量。干预组参与者在干预后1周（+73分钟/工作日（95%置信区间：22，123））和4周（+96分钟/工作日（95%置信区间：41，150））站立时间增加，而对照组无变化。干预组和对照组在第1周和第4周站立时间的组间差异分别为+78（95%置信区间：9，147）和+95分钟/工作日（95%置信区间：15，174）。干预组安装后第1、4和19周的坐姿时间分别减少了-64（95%置信区间：-125，-2）、-76（95%置信区间：-142，-11）和-100分钟/工作日（95%置信区间：-172，-29），而对照组无变化。两组从基线到随访期间的工作效率结果均未观察到变化。升降桌可增加客服中心员工的工作站立时间，且不降低工作效率。
