1. Effect of Different Sitting Postures on Lung Capacity, Expiratory Flow, and Lumbar Lordosis 
Fang Lin, DSc, Sriranjani Parthasarathy, BS, Susan J. Taylor, OT/L, Deborah Pucci, MPT, Ronald W. Hendrix, MD, Mohsen Makhsous, PhD 
Archives of Physical Medicine and Rehabilitation 
Volume 87, Issue 4, Pages (April 2006)
DOI: /j.apmr
Copyright © 2006 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

2. Fig 1
BPS of the wheelchair can be tilted downward 20°, and lumbar support added. Three sitting postures (ie, slumped, normal, WO-BPS) are shown here.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2006 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

3. Fig 2
A typical flow volume loop from a subject for the slumped, normal, WO-BPS sitting, and standing postures. Legend: , PEF; ♦, FEF25%; •, FEF50%; ▶, FEF75%; ↑, FVC.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2006 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

4. Fig 3
Lateral radiographic images. Representative lumbar lordosis from 1 subject in the (A) slumped, (B) normal, (C) WO-BPS sitting, and (D) standing postures.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2006 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions