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ID 28539
file
title alternative
Influence of deflection of wheelchair seat on estimated shear force on the buttocks
creator
Kobara, Kenichi
Eguchi, Atsuko
Watanabe, Susumu
Fujita, Daisuke
Nishimoto, Tetsuya
subject
車いす
シート
ずれ力
wheelchair
seat
shear force
NDC
Medical sciences
abstract
本研究は, 普通型車いすシートのたわみが安楽座位時の臀部ずれ力推定値に与える影響を検討する目的で行った. 対象は健常成人男性14名(20.6±0.6歳)であった. 実験は, シートのたわみを調節することによって3条件(たわみ小, 中, 大)で行った. ずれ力の推定には筆者らの実験モデルを用いた. 統計学的解析は一元配置分散分析を用い, 3条件間で比較した. その結果, 臀部ずれ力推定値は「たわみ小」では47.9±7.0N, 「たわみ中」は42.8±4.7N, 「たわみ大」は39.8±6.6Nであり, 「たわみ小」と「中」の間(p<0.05)と, 「たわみ小」と「大」の間(p<0.01)に有意差が認められ, たわみが大きいほど, 即ち脊柱後彎頂点より相対的背もたれ高が高くなるほど臀部ずれ力は低値を示していた. 本研究により, 長時間の車いす座位をとる患者の車いすを考えるにあたっては, 脊柱後彎頂点と相対的背もたれ高との関係を考慮したたわみ量の調整・再検討が褥瘡予防の観点から重要であることが明らかとなった.
abstract
The purpose of this study was to investigate how deflection of a standard-type wheelchair seat would influence the estimated shear force on the buttocks in comfortable wheelchair sitting. Fourteen healthy males aged 20.6±0.6 years without pathologies in the leg and/or trunk participated in this study. The study was conducted under three conditions, i.e. small, medium, and big deflection, by controlling the deflection of the seat. The shear force on the buttocks was estimated using an experimental model proposed by us. For statistical analysis, a ONEWAY ANOVA was used with the level of significance at p value below .05 level. The results showed that the estimated shear force on the buttocks was 47.9 ± 7.0 N with the small deflection, 42.8±4.7 N with the medium deflection, and 39.8 ± 6.6 N with the big deflection. There was a significant difference in the estimated shear force between the small and medium (p<.05), and small and big deflections (p<.01). The estimated shear force on the buttocks was low if the height of the relative backrest the higher than the top of the spinal kyposis. This study suggested that from the viewpoint of preventing decubitus ulcers in wheelchair users who need to sit in a wheelchair for long periods, it is important to coordinate and re-examine the deflection of the seat and the height of the relative backrest in relation to the top of the spinal kyposis.
journal title
Journal of health sciences, Hiroshima University
volume
Volume 7
issue
Issue 2
start page
59
end page
65
date of issued
2008-12-31
publisher
広島大学保健学出版会
issn
1347-7323
ncid
SelfDOI
language
jpn
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
department
Graduate School of Health Science
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