Tone outcomes
The myometer MyotonPROFirst of all, a line was drawn between the two anatomical landmarks of the given muscle, following the manufacturer’s recommendations. Then, the assessment point (centre of the muscle belly) was identified on that line, at the largest cross-section of the muscle belly, and those points were marked with a pen. The outcomes used were Natural Oscillation Frequency (Hz), characterising tone or tension, and Dynamic Stiffness (N) that measures tissue resistance to external and internal deformation at rest.