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Article Dans Une Revue Annals of Physical and Rehabilitation Medicine Année : 2015

Effect of a kneeling chair on lumbar curvature in patients with low back pain and healthy controls: A pilot study

Résumé

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. TRIAL REGISTRATION: ClinicalTrials.gov NCT01323127.

Dates et versions

hal-01915557 , version 1 (07-11-2018)

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Matthieu Vaucher, Marie-Eve Isner-Horobeti, Christophe Demattei, Sandrine Alonso, Christian Herisson, et al.. Effect of a kneeling chair on lumbar curvature in patients with low back pain and healthy controls: A pilot study. Annals of Physical and Rehabilitation Medicine, 2015, 58 (3), pp.151 - 156. ⟨10.1016/j.rehab.2015.01.003⟩. ⟨hal-01915557⟩
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