Table 3.

Repeated measures ANOVA for HRV parameters with baseline self-perceived stress (p < 0.05).

Parameter	Source	Sum of squares	Mean square	F	p-value
AC	Days	1,293	108	0.656	0.794
	Days × self-perceived stress	1,332	111	0.675	0.775
DC	Days	2,119	177	0.733	0.719
	Days × self-perceived stress	1,242	103	0.430	0.952
RMSSD	Days	1,390	116	0.443	0.945
	Days × self-perceived stress	2,293	191	0.731	0.721
SDNN	Days	678	56.5	0.372	0.973
	Days × self-perceived stress	667	55.6	0.366	0.975
Stress Index	Days	150	12.5	0.856	0.592
	Days × self-perceived stress	158	13.2	0.901	0.546
FFT Absolute Power LF	Days	8.52e+6	710,175	0.672	0.779
	Days × self-perceived stress	1.70e+7	1.41e+6	1.337	0.195
FFT Absolute Power HF	Days	8.85e+6	737,302	0.600	0.843
	Days × self-perceived stress	1.44e+7	1.20e+6	0.978	0.469
AR Absolute Power LF	Days	3.24e+7	2.70e+6	0.787	0.664
	Days × self-perceived stress	5.12e+7	4.27e+6	1.245	0.250
AR Absolute Power HF	Days	1.08e+9	8.96e+7	0.956	0.491
	Days × self-perceived stress	1.43e+9	1.19e+8	1.269	0.234
FFT Relative Power LF	Days	1,591	132.6	0.895	0.552
	Days × self-perceived stress	979	81.6	0.551	0.881
FFT Relative Power HF	Days	2048	171	1.031	0.419
	Days × self-perceived stress	1812	151	0.912	0.535
AR Relative Power LF	Days	2,136	178	1.091	0.366
	Days × self-perceived stress	1,431	119	0.731	0.721
AR Relative Power HF	Days	2,258	188	1.056	0.396
	Days × self-perceived stress	1829	152	0.856	0.593