Title
An Acute Bout of Self Myofascial Release Increases Range of Motion Without a Subsequent Decrease in Muscle Activation or Force

Author(s)
Macdonald G, Penney M, Mullaley M, Cuconato A, Drake C, Behm DG, Button DC.

Published
Jan, 2009

Published In
J Strength Cond Res. 2012 May 10

Abstract
ABSTRACT:: Foam rolling is thought to improve muscular function, performance, overuse and joint range of motion (ROM), however, there is no empirical evidence demonstrating this. Thus, the objective of the study was to determine the effect of self-myofascial release (SMR) via foam roller application on knee extensor force and activation and knee joint range of motion. Eleven healthy male (height 178.9 ? 3.5 cm, mass 86.3 ? 7.4 kg, age 22.3 ? 3.8 years) subjects who were physically active participated. Subjects' quadriceps maximum voluntary contraction force, evoked force and activation, and knee joint ROM were measured prior to, two minutes, and 10 minutes following two conditions; 1) two, one minute trials of SMR of the quadriceps via a foam roller and 2) no SMR (Control). A two-way ANOVA (condition x time) with repeated measures was performed on all dependent variables recorded in the pre- and post-condition tests. There were no significant differences between conditions for any of the neuromuscular dependent variables. However, following foam rolling, subjects' ROM significantly (ρ < 0.001) increased by 10 and 8% at 2 and 10 minutes, respectively. There was a significant (ρ < 0.01) negative correlation between subjects' force and ROM prior to foam rolling, which no longer existed following foam rolling. In conclusion an acute bout of SMR of the quadriceps was an effective treatment to acutely enhance knee joint range of motion without a concomitant deficit in muscle performance.

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