Table 2.

Repeated-measures three-way ANOVA for HRV and EEG results on stretching.

Variable	Intensity	Trial	Phase	Intensity ×Trial	Intensity ×Phase	Trial ×Phase	Intensity ×Trial ×Phase
HRV
LF	p = 0.76	p = 0.69	p = 0.001 **	p = 0.40	p = 0.14	p = 0.92	p = 0.27
	η2 ≤ 0.01	η2 ≤ 0.01	η2 = 0.33	η2 ≤ 0.01	η2 ≤ 0.01	η2 = 0.011	η2 ≤ 0.01
HF	p = 0.83	p = 0.74	p = 0.22	p = 0.23	p = 0.50	p = 0.65	p = 0.33
	η2 ≤ 0.01	η2 ≤ 0.01	η2 ≤ 0.01	η2 = 0.010	η2 ≤ 0.01	η2 ≤ 0.01	η2 ≤ 0.01
LF/HF ratio	p = 0.39	p = 0.64	p = 0.001 **	p = 0.29	p = 0.071	p = 0.76	p = 0.035 *
	η2 ≤ 0.01	η2 ≤ 0.01	η2 = 0.15	η2 ≤ 0.01	η2 ≤ 0.01	η2 ≤ 0.01	η2 = 0.016
EEG
Fp1 + Fp2 average
α power	p = 0.72	p = 0.001 **	p = 0.001 **	p = 0.81	p = 0.55	p = 0.047 *	p = 0.46
	η2 ≤ 0.01	η2 = 0.050	η2 = 0.18	η2 ≤ 0.01	η2 ≤ 0.01	η2 ≤ 0.01	η2 ≤ 0.01
β power	p = 0.92	p = 0.19	p = 0.0082 **	p = 0.73	p = 0.40	p = 0.36	p = 0.35
	η2 ≤ 0.01	η2 ≤ 0.01	η2 = 0.024	η2 ≤ 0.01	η2 ≤ 0.01	η2 ≤ 0.01	η2 ≤ 0.01
α/β ratio	p = 0.26	p = 0.43	p = 0.46	p = 0.53	p = 0.70	p = 0.22	p = 0.84
	η2 ≤ 0.01	η2 = 0.015	η2 ≤ 0.01	η2 = 0.012	η2 ≤ 0.01	η2 = 0.011	η2 ≤ 0.01
Left/Right ratio
α power	p = 0.06	p = 0.27	p = 0.083	p = 0.28	p = 0.66	p = 1.0	p = 0.62
	η2 ≤ 0.01	η2 ≤ 0.01	η2 = 0.016	η2 = 0.012	η2 ≤ 0.01	η2 ≤ 0.01	η2 ≤ 0.01
β power	p = 0.16	p = 0.51	p = 1.0	p = 0.31	p = 0.38	p = 0.27	p = 0.65
	η2 ≤ 0.01	η2 ≤ 0.01	η2 ≤ 0.01	η2 = 0.012	η2 ≤ 0.01	η2 = 0.015	η2 ≤ 0.01
α/β ratio	p = 0.46	p = 0.50	p = 0.037 *	p = 0.76	p = 0.36	p = 0.46	p = 0.79
	η2 ≤ 0.01	η2 = 0.011	η2 ≤ 0.01	η2 ≤ 0.01	η2 ≤ 0.01	η2 = 0.011	η2 ≤ 0.01

HRV, Heart Rate Variability; EEG, Electroencephalography; LF, Low Frequency; HF, High Frequency. **: p < 0.01. *: p < 0.05.