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Title: The impact of activities of daily living on seating interface pressures
Author: Ferguson, Rachel
ISNI:       0000 0004 5357 434X
Awarding Body: University of Ulster
Current Institution: Ulster University
Date of Award: 2014
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Even though the prevention of pressure ulcers is a priority area for healthcare agencies globally (Dunn & Stander, 2008; Graves et aI., 2005; Russo & Exilhauser, 2006), these challenging wounds continue to trouble individuals with impaired sensation, prolonged im111obility, or advanced age. The purpose of this thesis W<1S to investigate the effectiveness of integrating pressure redistributing activities into everyday life for reducing interface pressures for individuals at risk of ulceration. The first study reviewed the literature and found that the majority of individuals at risk of developing pressure ulcers do not adhere with the pressure relieving frequency currently recommended. It also highlighted that there is no known magnitude of movement currently recommended to relieve interface pressure. In order to measure magnitude of seated movement, the second study explored the effect of anatomical positioning of the Activpal3 accelerometer. The 1110St stable measurement came t1'0111 the accelerometer placed at the sternum. The third study investigated the etTect of duration and magnitilde of forward reach on body seat interface pressures of able bodied subjects sitting in a wheelchair. Reaching forward significantly redistributed pressure at the seating interface, as demonstrated by the change in dispersion index and contact area compared to upright sitting. The f0U11h study investigated the time that older adults spend in sitting while on a rehabilitation ward and how frequently they engage or are assisted to engage in repositioning movements when sitting. The older adults spent the majority of their time in a seated position and did not perf 01111 seated movements at <1 magnitude large enough to redistribute seating interface pressures. The final study investigated the pressure relieving behaviours of SCI individuals during everyday computer use, and the application of an ergonomically adapted computer-based activity to reduce seating interface pressures. The majority of movements perfon11ed by participants in this study had minimal etfect on interface pressures, yet many of the participants believed they performed frequent pressure reliefs. This thesis evidences the need for individual assessments and pressure relieving strategies, and introduces a novel concept of integrating pressure relief within everyday activities.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available