Background: Low back pain (LBP) is a common disorder in the western world. A majority of those afflicted by a first acute episode is at high risk of developing sub-acute or persistent symptoms. Persistent LBP can be caused by pathological changes in the discs and disturbed neuromuscular activation, which can cause hypotrophy of the extensors strong type-2 muscle fibres. Deadlift (DL) is an exercise that may correct all these pathological transformations. Aim: To investigate the effect of DL-training on patients with persistent LBP.