The Immediate Effects Of Thoracolumbar Fascia Inhibition And Suboccipital Muscle Inhibition

Comparison of The Immediate Effects of Thoracolumbar Fascia Inhibition and Suboccipital Muscle Inhibition on Cervical and Lumbar Joint Range of Motion, Flexibility of Back Extensors and Hamstring Muscles, Functional Exercise Capacity, and Balance In Individuals With Hamstring Shortness

This randomized controlled trial aimed to compare the immediate effects of two self-myofascial release techniques-suboccipital muscle inhibition and thoracolumbal fascia inhibition-on hamstring flexibility, spinal range of motion, and balance in healthy adults. A total of 75 participants with hamstring tightness were randomly assigned to one of three groups: suboccipital inhibition, thoracolumbal inhibition, or control. All participants performed hamstring stretching, and the intervention groups received one of the inhibition techniques immediately after. Outcomes were measured at baseline and within 30 minutes post-intervention. The study found that both techniques led to significant improvements in hamstring flexibility and spinal mobility, with region-specific benefits. The thoracolumbal technique was more effective for trunk and hamstring flexibility, while the suboccipital technique provided greater cervical mobility gains. Balance improvements were limited. These findings support the use of targeted myofascial interventions in clinical practice.

Inclusion Criteria:

• Healthy volunteers between the ages of 18 and 25
• Hamstring muscle tightness as defined by Active Knee Extension Test (AKET) ≥ 20°
• Ability to follow study instructions and provide informed consent
• No participation in other clinical studies within the last 3 months

Exclusion Criteria:

• AKET < 20° (i.e., no hamstring tightness)
• History of musculoskeletal, neurological, or systemic diseases affecting balance or flexibility
• Recent injury or surgery involving the spine, pelvis, or lower extremities
• Use of medications affecting muscle tone or balance
• Inability to perform the required movements or assessments
• Pregnancy or suspected pregnancy