%0 Letter %T Capacity for extra-spinal muscular effort in chronic non-specific low back pain: A cross-sectional case-control study of 192 patients and 335 controls. %A Davergne T %A Grelier A %A Ostertag A %A Jacob L %A Richette P %A Beaudreuil J %J Joint Bone Spine %V 91 %N 2 %D 2024 Mar 15 %M 37977523 %F 5.263 %R 10.1016/j.jbspin.2023.105663