Table 3.

Correlation analysis between ANS and EEG activity for the stretch and rest phases.

		LF Stretch	LF Rest	HF Stretch	HF Rest	LF/HF Ratio Stretch	LF/HF Ratio Rest
Low− intensity	Fp1 + Fp2 average
	α power Stretch	0.14	−0.14	0.20	0.15	−0.09	−0.41
	α power rest	0.15	−0.22	0.20	0.1	−0.09	−0.33
	β power Stretch	0.47 *	0.22	0.42	0.34	−0.10	−0.07
	β power rest	0.41	0.24	0.50 *	0.37	−0.3	0.01
	α/β ratio Stretch	0.01	0.07	0.10	0.13	−0.12	−0.09
	α/β ratio rest	−0.23	−0.33	−0.23	−0.25	0.17	−0.33
	Left/Right ratio
	α power Stretch	0.14	0.26	0.03	0.05	0.11	0.19
	α power rest	0.08	0.29	0.01	0.03	0.02	0.19
	β power Stretch	0.16	−0.19	−0.02	−0.06	0.13	0.06
	β power rest	0	0.10	0.03	−0.06	−0.21	0.04
	α/β ratio Stretch	−0.04	−0.15	−0.04	−0.06	−0.07	−0.18
	α/β ratio rest	0.1	−0.04	0.11	0.09	0.12	−0.09
High− intensity	Fp1 + Fp2 average
	α power Stretch	−0.26	−0.51 *	0.12	−0.14	−0.28	−0.61 **
	α power rest	−0.08	−0.40	0.30	0	−0.35	−0.65 **
	β power Stretch	−0.17	−0.28	0.26	0.03	−0.18	−0.42
	β power rest	−0.03	−0.19	0.33	0.09	−0.18	−0.37
	α/β ratio Stretch	0.15	0.14	0.07	0.11	−0.04	−0.01
	α/β ratio rest	−0.33	−0.4	−0.05	−0.23	−0.12	−0.20
	Left/Right ratio
	α power Stretch	−0.18	−0.10	0.15	0.04	−0.19	−0.22
	α power rest	0.33	0.32	0.12	0.28	0.01	−0.01
	β power Stretch	−0.25	−0.19	0.03	−0.11	−0.08	−0.09
	β power rest	−0.31	−0.36	−0.03	−0.22	−0.11	−0.16
	α/β ratio Stretch	0.11	0.19	0.05	0.14	0	0.03
	α/β ratio rest	−0.29	−0.26	−0.11	−0.12	0.09	−0.16

ANS, Autonomic Nervous System; EEG, Electroencephalography; LF, Low Frequency; HF, High Frequency. **: p < 0.01. *: p < 0.05.