0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Overall* WMSD risk
Factors
Physical
ergonomic
features*
Body
posture*
Workstation
Layout
Rest Breaks Ergonomic
practices,
resources*
Pre
Post
Percent Correct
Fig. 3. Percentage of correct responses on the pre–post office ergonomic knowledge questions (n ¼ 145; experimental groups; chair+training and
training-only), *po0.001.