Figure 4 | Scientific Reports

Figure 4

From: Myofascial trigger point (MTrP) size and elasticity properties can be used to differentiate characteristics of MTrPs in lower back skeletal muscle

Figure 4

MTrP stiffness response decreases with increasing longitudinal distance from applied force: (A) model of MTrP response to applied static force as a function of distance from force (δx). (B) Example of two MTrPs directly beneath the applied force (left panel), or equal distance from applied force (right panel). Each MTrP is designated as Left or Right. (C) Stiffness of Left and Right MTrP versus longitudinal distance (δx) between the two MTrPs. Stiffness for both Left MTrP (black squares) and Right MTrP (red circles) decreases exponentially with distance between points (solid line). (D) Implied force on Left and Right MTrPs as a function of lateral distance from applied force.

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