This study aims to verify the effects of a segmental stabilization exercise program on the anticipatory postural adjustment of subjects with chronic lumbar pain. The effects will be assessed by means of superficial electromyography focused on the registry of the onset of multifidius and deltoid (anterior and posterior) activity during a repetitive shoulder flexion/extension.

Inclusion Criteria:

• women aged between 18 and 65 years old
• chronic lumbar pain (at least 3 months)
• average pain intensity of ≥3 on a 10-point scale

Exclusion Criteria:

• presence of red flags (i.e.,tumor, known fractures, diagnosed inflammatory joint disease, etc);
• history of back surgery
• pregnancy
• less than 3 months of therapeutic treatment (physiotherapy) for low back pain