Quinn Tyler D, Perera Subashan, Conroy Molly B, Jakicic John M, Muldoon Matthew F, Huber Kimberly A, Alansare Abdullah B, Holmes Anthony J, Barone Gibbs Bethany
Department of Epidemiology and Biostatistics, West Virginia University, Morgantown, West Virginia, USA
Departments of Medicine and Biostatistics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Occup Environ Med. 2025 Apr 16;82(2):61-68. doi: 10.1136/oemed-2024-109868.
Sedentary behaviour (SB) is related to lower worker health-related quality of life (HRQOL), mental health and productivity. However, it is unknown whether reducing SB improves these outcomes. This study assessed whether a 3-month SB reduction intervention improved or was associated with dose-response changes in workplace satisfaction, productivity, mood and HRQOL.
Inactive desk workers with elevated blood pressure were randomised to a 3-month SB reduction intervention (n=135) or control (n=136). The intervention used a sit-stand desk, wrist-worn activity prompter and bi-monthly individual coaching to primarily replace work SB with standing and stepping. SB measured via a thigh-mounted activPAL3 micro, workplace satisfaction, productivity, mood and HRQOL were assessed at baseline and 3 months. Analyses of covariance compared changes in outcomes between groups with adjustment for baseline values. In both groups, associations between changes in work and non-work SB and outcomes were examined using linear regression.
Compared with control, reducing SB did not significantly change workplace satisfaction, productivity or HRQOL. Among mood measures, only vigour improved (1.01 vs 0.1 points, p=0.0302). Among all participants, reductions in non-work SB were associated with improvements in workplace satisfaction (+0.15 and +0.27 points/hour of non-work standing and stepping, respectively) and productivity (+0.47 points/hour of non-work stepping), while changes in SB during work were not related.
Interventions reducing non-work rather than work SB may be more impactful for improving workplace satisfaction and HRQOL outcomes. Future studies should explore workplace-based SB reduction interventions that are longer and target non-work time to improve similar outcomes.
NCT03307343.
久坐行为（SB）与劳动者健康相关生活质量（HRQOL）降低、心理健康及工作效率有关。然而，减少久坐行为是否能改善这些结果尚不清楚。本研究评估了为期3个月的减少久坐行为干预是否能改善或与工作场所满意度、工作效率、情绪及健康相关生活质量的剂量反应变化相关。
血压升高的久坐伏案工作者被随机分为为期3个月的减少久坐行为干预组（n = 135）或对照组（n = 136）。干预措施采用升降桌、腕戴式活动提示器以及每两个月一次的个人指导，主要用站立和走动替代工作中的久坐行为。通过佩戴在大腿上的activPAL3微型活动监测仪测量久坐行为，在基线和3个月时评估工作场所满意度、工作效率、情绪及健康相关生活质量。协方差分析比较了两组在调整基线值后的结果变化。在两组中，使用线性回归研究工作和非工作久坐行为变化与结果之间的关联。
与对照组相比，减少久坐行为并未显著改变工作场所满意度、工作效率或健康相关生活质量。在情绪指标中，只有活力得到改善（1.01分对0.1分，p = 0.0302）。在所有参与者中，非工作久坐行为的减少与工作场所满意度的提高（非工作站立和走动每小时分别提高0.15分和0.27分）以及工作效率的提高（非工作走动每小时提高0.47分）相关，而工作期间久坐行为的变化则无关联。
减少非工作而非工作中的久坐行为干预可能对提高工作场所满意度和健康相关生活质量结果更有成效。未来的研究应探索基于工作场所的更长时间且针对非工作时间的减少久坐行为干预措施，以改善类似结果。
NCT03307343。
