title: A systematic review and meta-analysis of workplace intervention strategies to reduce sedentary time in white-collar workers.
abstract: Prolonged sedentary behaviour has been associated with various detrimental health risks. Workplace sitting is particularly important, providing it occupies majority of total daily sedentary behaviour among desk-based employees. The aim of this systematic review and meta-analysis was to examine the effectiveness of workplace interventions overall, and according to different intervention strategies (educational/behavioural, environmental and multi-component interventions) for reducing sitting among white-collar working adults. Articles published through December 2015 were identified in five online databases and manual searches. Twenty-six controlled intervention studies published between 2003 and 2015 of 4568 working adults were included. All 26 studies were presented qualitatively, and 21 studies with a control group without any intervention were included in the meta-analysis. The pooled intervention effect showed a significant workplace sitting reduction of -39.6 min/8-h workday (95% confidence interval [CI]: -51.7, -27.5), favouring the intervention group. Multi-component interventions reported the greatest workplace sitting reduction (-88.8 min/8-h workday; 95% CI: -132.7, -44.9), followed by environmental (-72.8 min/8-h workday; 95% CI: -104.9, -40.6) and educational/behavioural strategies -15.5 min/8-h workday (95% CI:-22.9,-8.2). Our study found consistent evidence for intervention effectiveness in reducing workplace sitting, particularly for multi-component and environmental strategies. Methodologically rigorous studies using standardized and objectively determined outcomes are warranted. © 2016 World Obesity.
authors.affiliation: Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore.
authors.forename: A H Y
authors.initials: AH
authors.lastname: Chu
authors.affiliation: Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore.
authors.forename: S H X
authors.initials: SH
authors.lastname: Ng
authors.affiliation: Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore.
authors.forename: C S
authors.initials: CS
authors.lastname: Tan
authors.affiliation: Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore.
authors.forename: A M
authors.initials: AM
authors.lastname: Win
authors.affiliation: Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore.|PAPRSB Institute of Health Sciences, Universiti Brunei Darussalam, Gadong, Brunei.
authors.forename: D
authors.initials: D
authors.lastname: Koh
authors.affiliation: Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore.|Institute for Social Medicine, Epidemiology and Health Economics, Charite University Medical Centre, Berlin, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Müller-Riemenschneider
mesh_terms: D001519:Behavior; D006801:Humans; D016272:Occupational Health; D013997:Time Factors; D017132:Workplace
keywords: Intervention studies; physical activity; sedentary behaviour; workplace