Efficacy of a Home-based Stretching Program on Fibromyalgia Symptoms: a Randomised Controlled Trial

Inclusion Criteria: * individuals diagnosed with fibromyalgia in accordance with the ACR 2016 diagnostic criteria. * individuals diagnosed with chronic non-malignant pain or individuals diagnosed with chronic widespread pain (including fibromyalgia syndrome) are also included when they meet the ACR 2016 diagnostic criteria. Exclusion Criteria: * Non-controlled systemic disorders (such as hypertension, diabetes and coronary insufficiency), * neurological conditions that impair alertness or comprehension, musculoskeletal conditions that could compromise assessments (such as nerve root compression or knee joint inflammation), * relevant joint disorders (such as severe arthritis, arthroplasty of the hip or knee, and rheumatoid arthritis), * recent changes in therapy for fibromyalgia (i.e., within four weeks of baseline).