We need to move, but movements are not the same; some we should even avoid.
This white paper reviews assumptions in the ergonomics research about sitting postures and movements and their implications for seat design ergonomics.
Case for & against movement for its sake
Ergonomics review by Rani Lueder, CPE
Considerations relevant to the Allsteel Sum chair.
Courtesy of Allsteel | Selected abstracts
Rethinking sitting | htm | pdf (140K)
Seat Ergonomics ErgoExpo pres. | Slides
National Ergonomics Conference & Expo
Arm support & armrest design R. Lueder
Seat height revisited by Rani Lueder
More sitting & seating ergonomics
From Corlett & Eklund (1984)
How does a backrest work?
Graphic with permission