工作场所久坐与可调节高度工作站：一项随机对照试验。

Workplace sitting and height-adjustable workstations: a randomized controlled trial.

机构信息

Cancer Prevention Research Centre, School of Population Health, The University of Queensland, Herston, Queensland.

Cancer Prevention Research Centre, School of Population Health, The University of Queensland, Herston, Queensland; Baker IDI Heart and Diabetes Institute, Melbourne, Victoria.

出版信息

Am J Prev Med. 2014 Jan;46(1):30-40. doi: 10.1016/j.amepre.2013.09.009.

DOI:10.1016/j.amepre.2013.09.009

PMID:24355669

Abstract

BACKGROUND

Desk-based office employees sit for most of their working day. To address excessive sitting as a newly identified health risk, best practice frameworks suggest a multi-component approach. However, these approaches are resource intensive and knowledge about their impact is limited.

PURPOSE

To compare the efficacy of a multi-component intervention to reduce workplace sitting time, to a height-adjustable workstations-only intervention, and to a comparison group (usual practice).

DESIGN

Three-arm quasi-randomized controlled trial in three separate administrative units of the University of Queensland, Brisbane, Australia. Data were collected between January and June 2012 and analyzed the same year.

SETTING/PARTICIPANTS: Desk-based office workers aged 20-65 (multi-component intervention, n=16; workstations-only, n=14; comparison, n=14).

INTERVENTION

The multi-component intervention comprised installation of height-adjustable workstations and organizational-level (management consultation, staff education, manager e-mails to staff) and individual-level (face-to-face coaching, telephone support) elements.

MAIN OUTCOME MEASURES

Workplace sitting time (minutes/8-hour workday) assessed objectively via activPAL3 devices worn for 7 days at baseline and 3 months (end-of-intervention).

RESULTS

At baseline, the mean proportion of workplace sitting time was approximately 77% across all groups (multi-component group 366 minutes/8 hours [SD=49]; workstations-only group 373 minutes/8 hours [SD=36], comparison 365 minutes/8 hours [SD=54]). Following intervention and relative to the comparison group, workplace sitting time in the multi-component group was reduced by 89 minutes/8-hour workday (95% CI=-130, -47 minutes; p<0.001) and 33 minutes in the workstations-only group (95% CI=-74, 7 minutes, p=0.285).

CONCLUSIONS

A multi-component intervention was successful in reducing workplace sitting. These findings may have important practical and financial implications for workplaces targeting sitting time reductions.

CLINICAL TRIAL REGISTRATION

Australian New Zealand Clinical Trials Registry 00363297.

摘要

背景

大多数伏案工作者在其工作日的大部分时间都处于坐姿。为解决久坐这一新兴健康风险，最佳实践框架建议采用多组分干预措施。然而，这些方法资源密集且其效果的相关知识有限。

目的

比较多组分干预、可调节高度工作站干预与常规干预（即对照组）对减少工作场所久坐时间的效果。

设计

在澳大利亚昆士兰大学的三个独立行政单位中开展了三臂类随机对照试验。数据收集于 2012 年 1 月至 6 月，同年进行分析。

地点/参与者：年龄在 20-65 岁之间的伏案办公室工作者（多组分干预组 16 名，工作站干预组 14 名，对照组 14 名）。

干预

多组分干预包括安装可调节高度工作站以及组织层面（管理层咨询、员工教育、管理人员给员工发电子邮件）和个人层面（面对面指导、电话支持）的干预措施。

主要结局指标

通过佩戴 7 天的 activPAL3 设备客观评估工作场所的久坐时间（8 小时工作日内的分钟数），并在基线和 3 个月（干预结束时）进行测量。

结果

在基线时，所有组的工作场所久坐时间比例均值均约为 77%（多组分组 366 分钟/8 小时[SD=49]；工作站干预组 373 分钟/8 小时[SD=36]，对照组 365 分钟/8 小时[SD=54]）。与对照组相比，多组分组的工作场所久坐时间在干预后减少了 89 分钟/8 小时工作日（95%CI=-130，-47 分钟；p<0.001），工作站干预组减少了 33 分钟（95%CI=-74，7 分钟；p=0.285）。