Reliability of Hamstring Flexibility Test with Hip Inferior Glide Mobilization in Patients with Low Back Pain

Low back pain (LBP) is a leading cause of disability worldwide and is associated with major economic costs.1,2 Approximately 90% of adults will suffer from LBP during their lifetime.3 Individuals with hamstring tightness are at an increased risk of developing LBP.1 Hamstring tightness promotes increased lumbar flexion during forward-bending tasks and reduces lumbar lordosis, which contributes to LBP.3,4 To assess hamstring flexibility in LBP patients, the active knee extension (AKE) and straight leg raise test are commonly administered to subjects in the supine position.5 Both tests showed excellent reliability for individuals with hamstring tightness.6 However, unwanted pelvic rotation during the straight leg raise test may promote neurological Reliability of Hamstring Flexibility Test with Hip Inferior Glide Mobilization in Patients with Low Back Pain