The Effects Of Self-Myofascial Release On Flight Time And Step Frequency In Trained Runners

Abstract

Running performance can be measured by flight time and stride frequency. Self-myofascial release (SMR), such as foam rolling, has gained much popularity in athletes for mobilization and releasing fascial adhesions in the working muscles. PURPOSE: The purpose of this study was to examine whether SMR will affect flight time and step frequency in trained runners. METHODS: Eight trained runners (ages: 41.38 ± 8.68, VO2max: 47.4 ± 6.87) volunteered to participate. During their first session they were video recorded completing a 4-minute treadmill run with a 1% incline at self-selected 5-km pace, followed by a VO2max test. During their second session, the participants completed guided foam rolling and repeated the 4 min run test. The videos were used to analyze flight time and stride frequency through Runmatic. RESULTS: There were no significant differences for the t-tests for flight time (p > .05), however there was a significant difference in stride frequency (p = 0.44). CONCLUSIONS: These findings suggest that foam rolling may improve stride frequency. Previous research has found stride frequency to be improved with improved flexibility, foam rolling has been found to improve range of motion in the hips. Future studies are still needed to determine how SMR effects running performance.