a Institute of Sport Science , University of Vienna , Vienna , Austria.
b Department of Research and Development , University of Applied Sciences for Health Professions Upper Austria , Linz , Austria.
Ergonomics. 2019 Jun;62(6):794-810. doi: 10.1080/00140139.2019.1577497. Epub 2019 Apr 7.
Implementing sit/stand workstations in sedentary work environments is a common way to reduce sedentary time, but their medium-term effect on cognitive performance is unclear. To address this circumstance, eighteen office workers participated in a two-arm, randomised controlled cross-over trial (ClinicalTrials.gov Identifier: NCT02825303), either working at a traditional (sit) or an interventional (sit/stand) workplace for 23 weeks. Cognitive performance (working speed, reaction time, concentration performance, accuracy), workload and relevant covariates (salivary cortisol level, heart rate, physical activity, sitting time) were measured pre- and post-intervention under laboratory conditions. MANOVA and RMANOVA results did not show differences in performance parameters and workload, respectively, between sit/stand and traditional workplace users. Differences in text editing accuracy and cortisol levels for sit/stand workstation users indicate potential connectivity to cognitive parameters which should be further examined with large-scale studies. Medium-term effects of working at sit/stand workstations on cognitive performance and workload are unexplored. This randomised controlled trial suggests that cognitive performance and workload are unaffected for sit/stand workstation users after 23 weeks of use. However, accuracy appeared to improve and physiological stress appeared to be altered. : BMI: body mass index; IPAQ: International physical activity questionnaire; MET: metabolic equivalent of task; MANOVA: multivariate ANOVA; NASA TLX: NASA task load index; RMANOVA: repeated measures ANOVA.
在久坐的工作环境中实施坐站交替工作站是减少久坐时间的常用方法，但它们对认知表现的中期影响尚不清楚。为了解决这一情况，18 名办公室工作人员参加了一项双臂、随机对照交叉试验（ClinicalTrials.gov 标识符：NCT02825303），他们要么在传统（坐）工作场所，要么在干预（坐/站）工作场所工作 23 周。在实验室条件下，分别在干预前后测量认知表现（工作速度、反应时间、集中力表现、准确性）、工作量和相关协变量（唾液皮质醇水平、心率、身体活动、坐姿时间）。MANOVA 和 RMANOVA 的结果表明，在表现参数和工作量方面，坐/站和传统工作场所使用者之间没有差异。对于坐站工作站使用者，文本编辑准确性和皮质醇水平的差异表明与认知参数存在潜在联系，应进一步通过大规模研究进行检查。坐站工作站对认知表现和工作量的中期影响尚未探索。这项随机对照试验表明，在使用 23 周后，坐站工作站使用者的认知表现和工作量不受影响。然而，准确性似乎有所提高，生理压力似乎也发生了变化。：BMI：体重指数；国际体力活动问卷（IPAQ）；MET：任务代谢当量；MANOVA：多元方差分析；美国宇航局任务负荷指数（NASA TLX）；RMANOVA：重复测量方差分析。
