Effect of seat cushion on dynamic stability in sitting during a reaching task in wheelchair users with paraplegia Rachid Aissaoui, PhD, Chantal Boucher,

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Effect of seat cushion on dynamic stability in sitting during a reaching task in wheelchair users with paraplegia Rachid Aissaoui, PhD, Chantal Boucher, BSc, Daniel Bourbonnais, PhD, Michèle Lacoste, OT, Jean Dansereau, PhD Archives of Physical Medicine and Rehabilitation Volume 82, Issue 2, Pages 274-281 (February 2001) DOI: 10.1053/apmr.2001.19473 Copyright © 2001 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig. 1 Experimental setup. Schematic representation of subject seated on a stool, facing investigators (top); from above (bottom). Abbreviations: FSA, force sensing array. Archives of Physical Medicine and Rehabilitation 2001 82, 274-281DOI: (10.1053/apmr.2001.19473) Copyright © 2001 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig. 2 (A) COP trajectory of a typical subject during right hand reaching in the ipsilateral and contralateral side. (B) Phase diagram plot of the COP (instantaneous velocity in m/s versus instantaneous displacement mm). Abbreviations: AP, anteroposterior direction in mm; ML, mediolateral direction in mm; FF, flat foam. Archives of Physical Medicine and Rehabilitation 2001 82, 274-281DOI: (10.1053/apmr.2001.19473) Copyright © 2001 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions