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Appl Ergon. 2009 Jan;40(1):124-35. doi: 10.1016/j.apergo.2007.12.009. Epub 2008 Mar 11.

The effects of an office ergonomics training and chair intervention on worker knowledge, behavior and musculoskeletal risk.

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Liberty Mutual Research Institute for Safety, Hopkinton, MA 01748, USA.


A large-scale field intervention study was undertaken to examine the effects of office ergonomics training coupled with a highly adjustable chair on office workers' knowledge and musculoskeletal risks. Office workers were assigned to one of three study groups: a group receiving the training and adjustable chair (n=96), a training-only group (n=63), and a control group (n=57). The office ergonomics training program was created using an instructional systems design model. A pre/post-training knowledge test was administered to all those who attended the training. Body postures and workstation set-ups were observed before and after the intervention. Perceived control over the physical work environment was higher for both intervention groups as compared to workers in the control group. A significant increase in overall ergonomic knowledge was observed for the intervention groups. Both intervention groups exhibited higher level behavioral translation and had lower musculoskeletal risk than the control group.

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