Comparison the Effect of Myofascial Release versus Static Stretching On Iliopsoas Muscle Tightness

Oral Presentation
Paper ID : 1362-12THCONG
Oral / Poster Presentation File: 1362-12THCONG.mp4 
Physical Education Training, Farhangian University, Tehran, Iran
Limited hip range of motion caused by Iliopsoas muscle tightness not only limits mobility, but also affects posture and gait. The purpose of this study was Comparison the effect of active and passive stretching and myofascial release technique on hip rang of motion, lumbo-pelvic alignment, and strength of selected muscles in subjects with iliopsoas tightness.
48 soccer players (11-14 years old) with iliopsoas muscle tightness recruited and randomized in four groups of active static stretching, passive static stretching, myofascial release techniques and control. Participants in the intervention groups received a four weeks (3 times/week) stretch and myofascial release intervention for the iliopsoas of their dominant leg. Hip Extension/flexion PROM/AROM, lumbar lordosis, pelvic tilt, and strength of iliopsoas, gluteus maximus, hamstring, and quadriceps muscles were measured before and after four weeks (12 session) Universal goniometer, handheld dynamometer, flexible ruler, and inclinometer used for collecting data. Data analysis were performed using one-way analysis of covariance (ANCOVA), and Post hoc analysis were performed using the Bonferroni test.
The results demonstrated significant gains in Hip Extension/flexion PROM/AROM after the use of all techniques (p<0.05), but with significantly greater improvements achieved with the myofascial release than with the stretching methods (p=0.001). Strength of hamstring and gluteus maximus muscles had significant increase after myofascial release technique and active stretch compare to the passive stretching method (p=.001, p=0.02). Also rectus femoris muscle strength had decreased after myofascial released technique and active stretching method and had increased after passive stretching method but there was not statistically significant (p>.05). Neither myofascial release technique nor active nor passive stretching methods had significant effect on lumbar lordosis (p=0.14) or pelvic tilt (p=0.10).
Four weeks active stretching method and myofascial release technique are more effective than passive stretching method to improve hip range of motion, and strength of gluteus maximus and hamstring muscles.