Effects of Myofascial Self-Release on Range of Motion, Pressure Pain Threshold, and Hamstring Strength in Asymptomatic Individuals: A Randomized, Controlled, Blind Clinical Trial.

CONTEXT Myofascial self-release is performed using a roller to exert pressure on the soft tissues and to promote effects similar to those of traditional massage. However, there is no standardization regarding its application, mainly in relation to time. OBJECTIVE To evaluate the effects of myofascial self-release with a rigid roller on range of motion (ROM), pressure pain threshold (PPT), and hamstring strength in asymptomatic individuals following 2 different times of intervention. DESIGN Randomized, controlled, blind, clinical trial comparing preintervention and immediately postintervention within 2 groups. SETTING Institutional physiotherapy clinic. PARTICIPANTS A total of 40 university students (18-30 y), who had no symptoms, participated. INTERVENTION Foam roller for 30 seconds and 2 minutes for group 2. MAIN OUTCOME MEASURES Hamstring PPT, knee-extension ROM, and peak knee-flexion torque measured before and immediately after the intervention. RESULTS Both groups experienced a statistically significant increase in ROM compared with baseline (30 s and 2 min for group 2 P < .024). There were no statistically significant differences comparing peak knee-flexion torque or PPT. CONCLUSIONS Hamstring myofascial self-release using a roller for 30 seconds or 2 minutes produced an increase in ROM in healthy individuals. PPT and peak knee-flexion isometric torque showed no effects.