Document Detail

Seat-interface pressure: a pilot study of the relationship to gender, body mass index, and seating position.
MedLine Citation:
PMID:  12638109     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: To investigate the relationship between interface pressure and gender, body mass index (BMI), and seating positions, and to evaluate the implications for clinical practice. DESIGN: Group design. SETTING: Pressure mapping laboratory. PARTICIPANTS: Sixty-three student volunteers (44 women, 19 men; mean age, 22.2+/-5.1y). INTERVENTIONS: Seated-interface pressure was measured using the Force Sensing Array pressure mapping system. Seating positions used included recline (10 degrees, 20 degrees, 30 degrees ), foot support, and foot elevation. MAIN OUTCOME MEASURES: Interface pressure in the form of both average pressure (mean of the pressure sensor values) and maximum pressure (highest individual sensor value). RESULTS: Both average and maximum pressures were independent of gender, while average pressure had a significant positive correlation with BMI (r=.381, alpha=.01 level). Recline of the chair by 30 degrees significantly reduced average pressure (P<.001), whereas recline by 10 degrees or 20 degrees had no significant effect. Recline by 10 degrees, 20 degrees, and 30 degrees did not significantly alter maximum pressure. Elevation of the feet on a footstool reduced average pressure to a level approaching statistical significance, while supporting participants' feet versus leaving them unsupported significantly increased average pressure at a 0 degrees, 10 degrees, 20 degrees, and 30 degrees recline (P<.01) and maximum pressure at 0 degrees, 10 degrees (P<.01), and 30 degrees (P<.05). CONCLUSIONS: Elevating clients' feet and reclining their chair by 30 degrees reduced interface pressure and the associated risk of pressure ulcer development. Additional research is required, however, to replicate this study with participants at increased risk of pressure ulcer development.
May D Stinson; Alison Porter-Armstrong; Pamela Eakin
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Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Archives of physical medicine and rehabilitation     Volume:  84     ISSN:  0003-9993     ISO Abbreviation:  Arch Phys Med Rehabil     Publication Date:  2003 Mar 
Date Detail:
Created Date:  2003-03-14     Completed Date:  2003-03-27     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  2985158R     Medline TA:  Arch Phys Med Rehabil     Country:  United States    
Other Details:
Languages:  eng     Pagination:  405-9     Citation Subset:  AIM; IM    
Copyright Information:
Copyright 2003 by the American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation
Rehabilitation Sciences Research Group, University of Ulster, Northern Ireland.
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MeSH Terms
Body Mass Index*
Foot / physiology
Human Engineering / statistics & numerical data
Pilot Projects
Posture / physiology*
Pressure* / adverse effects
Pressure Ulcer / etiology,  prevention & control*
Reference Values
Sex Factors
Transducers, Pressure / statistics & numerical data

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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