Does Active Release Techniques ® (ART) cause a measurable change in the stiffness of the medial gastrocnemius?

This is a prospective cohort study designed to determine if shear wave elastography can reveal a measurable change in the muscle stiffness of the medial gastrocnemius after an ART® intervention. And to further investigate how long any potential changes in stiffness last within the medial gastrocnemius muscle post intervention.