Inclusion criteria:
Women aged 20–40 years with a history of singleton vaginal delivery in the past 3 to 12 months.
Diagnosis of non-specific low back pain, pelvic girdle pain, or a combination of both, with onset during pregnancy or at least 3 weeks postpartum, confirmed by a specialist physician.
Positive Active Straight Leg Raise (ASLR) test and positive results in at least three out of the following six sacroiliac joint provocation tests: distraction test, compression test, posterior shear test (thigh thrust), Gaenslen’s test (right), Gaenslen’s test (left), and sacral thrust test.
Pain intensity between 3 and 7 (on a 0–10 Visual Analog Scale – VAS) at the time of assessment or during the past two weeks.
ody Mass Index (BMI) less than 30 kg/m²
Exclusion criteria:
Spinal abnormalities or pathological conditions of the spine (such as spinal stenosis, scoliosis, spondylolisthesis, fracture, tumors of the spine or pelvis, etc.).
History of neurological, cardiovascular, respiratory, renal diseases, or rheumatoid arthritis.
History of surgical intervention in the lumbopelvic region.
Postpartum urinary disorders (including urinary incontinence and/or urinary retention).
Urogenital prolapse greater than grade 3.
History of cesarean section or more than two vaginal deliveries.
Failure to complete at least 90% of the study sessions.
Use of any concurrent medications or physiotherapy interventions during the study period.