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Figure 1

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

Figure 1

Experimental MTrP measurement resolution and analysis: (A) example MTrP measurement using ultrasound. MTrP point measurements are identified relative to the muscle tissue size. (B) MTrP compression resolution is measured using transverse height of a single MTrP and its corresponding longitudinal length (L). Measured height (h0) decreases under direct application of 1 lbp pressure (hp). (C) Aggregate circularity ratio (h/L) decreases with pressure. **P < 0.01, 2-tailed t-test; mean ± SEM; N = 65 both conditions.

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