The Effect of Modified Sitting Postures on Postural Sway and Reach Distance in Sitting
thesisposted on 01.08.2019, 00:00 by Adeolu Ademiluyi
Purpose: Sitting is a common and familiar position used daily as a platform for many motor activities. The goal of the study was to investigate how difference in the chair design and selected sitting manipulations contribute to reach distance in sitting. Method: Ten healthy subjects were required to perform reaching forward while sitting in an adjustable chair with 0, 10 forward or 10 backward inclination of the seat, with and without footrest and leg support and when holding the edge of the seat with the contralateral arm and legs crossed. Results: In comparison to sitting with feet on the footrest, the reaching distance decreased significantly when sitting on either forward or backward inclined seat (p<0.05) and it increased when the subjects held the edge of the seat while seated with footrest and the posterior leg support (p<0.05). There was no major effect of crossing the legs or the use of anterior leg support on the maximal reach distance. Conclusions: Modification of the chair design could increase or decrease reaching distance in sitting. The outcome of the study provides a background for future investigations of the effect of sitting positions on reaching distance in individuals with impairments who spend most of their time in sitting.