Effect of High-frequency Diathermy on Hamstring Tightness

Background: The hamstring is a muscle that crosses two joints, the hip and knee, its flexibility an important indicator of physical health in role many activities daily living such as sitting, walking, running. Limited range motion (ROM) due to tightness strongly related back pain malfunction joint. High-frequency diathermy (HFD) therapy known be effective relaxing increasing ROM. Objects: To investigate effects HFD on active knee extension ROM tone stiffness participants with tightness. Methods: Twenty-four were recruited, operational definition this study was below 160° at 90° flexion supine position. applied for 15 minutes using WINBACK device. All examined before after intervention, results analyzed paired t-test. outcome measures included ROM, viscoelastic property hamstring, peak torque passive extension. Results: significantly increased from 138.8° ± 9.9° (mean standard deviation) 143.9° 10.4° intervention (p < 0.05), while decreased 0.05). Also, 0.05). Conclusion: Application tight hamstrings immediately improves reduces tone, stiffness, elasticity muscle. However, further experiments are required examine long-term including reduction, postural improvement around pelvis lower extremities, enhanced functional movement.