Figure 3 | Scientific Reports

Figure 3

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

Figure 3

Single MTrP stiffness response correlates with MTrP size: (A) example MTrP compression measured versus original MTrP thickness. (B) Distribution of MTrP sizes. Average MTrP size is 0.6 cm. (C) MTrP size correlates with muscle thickness. (D) MTrP stiffness slightly decreases with increasing thickness. Grey points show raw data, and red squares are equal number averaged data. (E) MTrP stiffness slightly decreases with increasing fraction of muscle tissue. Grey points show raw data, and red squares are equal number averaged data. (F) MTrP as a function of muscle fraction separated by pain (green stars) and no-pain (blue circles). Data for each group have been separated into equal number (N = 6 MTrPs) bins. On average, Active MTrPs are more stiff than Latent MTrPs for the same size and fraction of muscle tissue. Statistical comparison from pair-wise repeated measures t-test.

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