Table S2. Correlation of confounding factors toward continuous data of variables.

		MO1	MO2	TSC	Age	Training duration
HRV1	r	-0.086	-0.091	0.153	-0.035	0.079
	p	0.419	0.394	0.149	0.740	0.460
	n	90	90	90	90	90
HRV2	r	-0.086	-0.204	0.235	-0.080	-0.011
	p	0.421	0.053	0.026	0.452	0.920
	n	90	90	90	90	90
CSA1	r	0.324*	0.167	0.024	0.040	-0.022
	p	0.002	0.115	0.823	0.706	0.837
	n	90	90	90	90	90
CSA2	r	0.123	0.058	0.034	0.121	0.065
	p	0.247	0.589	0.748	0.254	0.554
	n	90	90	90	90	90
SC1	r	-0.067	-0.027	-0.076	-0.096	-0.040
	p	0.530	0.798	0.477	0.369	0.709
	n	90	90	90	90	90
SC2	r	0.129	0.056	-0.141	-0.114	-0.006
	p	0.224	0.598	0.185	0.283	0.952
	n	90	90	90	90	90
MF0	r	0.250	0.127	-0.030	-0.083	-0.019
	p	0.018	0.233	0.782	0.436	0.857
	n	90	90	90	90	90
MF1	r	0.143	0.181	0.056	-0.008	-0.008
	p	0.179	0.088	0.600	0.939	0.944
	n	90	90	90	90	90
MF2	r	0.086	0.138	-0.033	0.013	0.022
	p	0.421	0.195	0.761	0.906	0.839
	n	90	90	90	90	90

*The value is considered to be moderate correlation 1: pre-test; 2: post-test; HRV: heart rate variable;
CSA: cognitive and somatic anxiety; SC: state confidence; MF: mental fatigue; MO: motivation; TSC: trait self-control.