Repeated Muscle Injury as a Presumptive Trigger for Chronic Masticatory Muscle Pain

<table>Effect of repeated masseter muscle injury on maximal isometric torque. Asterisk denotes significant difference from maximal torque after a single bout of eccentric contraction (day 0 initial bout).</table>

Pain Research and Treatment

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Figure 4

Figure 4: Repeated Muscle Injury as a Presumptive Trigger for Chronic Masticatory Muscle Pain 