Effects of a Hip Flexor and Extensor Muscle Training Program in Individuals with Chronic Mechanical Low Back Pain

This study aims to enhance healthcare interventions for chronic low back pain, focusing specifically on patients whose pain may be linked to restricted hip extension mobility. Patients will be referred from the healthcare system to the physiotherapy center, where the principal investigator, Lucía Vicente, will randomize participants into either the intervention or control group. Each participant will complete an initial evaluation at the start of the intervention and again after 4 weeks. Additional questionnaires will be administered one and three months post-intervention. Pelvic movement changes will also be tracked before each in-person session. The program will focus on strengthening the pelvic muscles, particularly by targeting hip extensor strengthening and hip flexor stretching.