Table 1. Spearman’s correlation coefficients for the electromyographic activities of the in masticatory muscles and the degree of TMD severity.

	Rest				Isotonic contraction				Isometric contraction
	LM	LT	RM	RT	LM	LT	RM	RT	LM	LT	RM	RT
Mild	0.36	−0.5	0.46	−0.44	0.07	0.21	0.01	−0.01	0.01	0.13	−0.08	−0.05
Moderate	0.23	0.18	0.15	−0.36	0.03	0.06	0.04	0.01	0.11	−0.37	−0.08	0.04
Severe	0.7	0.54	0.65	0.21	0.43	0.81*	0.05	0.81*	0.32	0.65	0.32	0.76*

*Statistically significant difference p < 0.05