TY - JOUR
T1 - Effect of a kneeling chair on lumbar curvature in patients with low back pain and healthy controls: A pilot study
AU - Vaucher, M.
AU - Isner-Horobeti, M.E.
AU - Demattei, C.
AU - Alonso, S.
AU - Herisson, C.
AU - Kouyoumdijan, P.
AU - van Dieen, J.H.
AU - Dupeyron, A.
PY - 2015
Y1 - 2015
N2 - 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.
AB - 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.
U2 - 10.1016/j.rehab.2015.01.003
DO - 10.1016/j.rehab.2015.01.003
M3 - Article
SN - 1877-0657
VL - 2015
SP - 151
EP - 156
JO - Annals of Physical and Rehabilitation Medicine
JF - Annals of Physical and Rehabilitation Medicine
IS - 58
ER -