Effect of a kneeling chair on lumbar curvature in patients with low back pain and healthy controls: A pilot study - 16/06/15
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Abstract |
Background |
The concept of an ideal sitting posture is often used in practice but lacks a basis in evidence.
Objective |
We designed a cross-sectional, comparative, matched study to determine the effects of chair and posture on lumbar curvature in 10 patients with chronic non-specific low back pain (CLBP; mean pain duration 24 ± 18 months) and 10 healthy matched controls.
Methods |
Pelvic incidence, sacral slope and lumbar curvature were measured on computed radiographs by 2 blinded clinicians for subjects in 2 postures (upright vs slumped sitting) and on 2 chairs (usual flat chair vs kneeling chair).
Results |
The reliability of measures was excellent (intraclass correlation coefficient>0.9). As hypothesized, the expected sacral slope and lumbar lordosis changed between standing and sitting on a kneeling chair as compared with a usual chair (P<0.0001) and less in patients than controls (P=0.046) for lordosis only. In addition, as expected, changes were more pronounced with slumped than upright sitting (P<0.0001). An interaction between chairs and postures for lumbar lordosis (P=0.02) indicated more pronounced effects of the chair in slumped sitting. Therefore, lumbar lordosis was reduced less when sitting on a kneeling chair as compared with a usual chair.
Conclusions |
Although healthy subjects showed more reduction in lordosis between standing and sitting, the chair effect was found in both CLBP patients and healthy subjects.
El texto completo de este artículo está disponible en PDF.Keywords : Low back pain, Lumbar lordosis, Sitting, Chair
Esquema
| ☆ | Clinical trials number: NCT01323127. |
| ☆☆ | The study was performed in the Physical Medicine and Rehabilitation Department, Carémeau University Hospital of Nîmes, University of Montpellier I. |
Vol 58 - N° 3
P. 151-156 - juin 2015 Regresar al número
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Bienvenido a EM-consulte, la referencia de los profesionales de la salud.