Table 3.

Statistical analysis results of ECG parameters

Parameters	L		M		H		P		P (L-M)	P (L-H)	P (M-H)
	863.75	(76.38)	850.05	(71.26)	846.84	(110.64)	$<$	0.05	0.11	$<$ 0.05	1.	0
SDNN	143.11	(36.45)	148.44	(35.88)	126.75	(36.40)		0.167	/	/	/
SDANN	133.77	(25.04)	136.31	(26.11)	124.52	(27.79)		0.355	/	/	/
RMSSD	42.47	(8.97)	35.40	(10.44)	33.28	(9.17)	$<$	0.05	0.078	$<$ 0.05	1.	0
SDNNI	26.46	(10.56)	25.73	(6.63)	30.12	(10.63)		0.436	/	/	/
NN50	38.00	(15.24)	27.65	(19.44)	36.00	(22.17)		0.767	/	/	/
PNN50	22.30	(6.58)	20.53	(7.02)	19.08	(6.05)		0.392	/	/	/
LF_norm	43.19	(12.65)	49.69	(13.02)	59.20	(11.89)	$<$	0.01	0.347	$<$ 0.01	0.	068
HF_norm	43.89	(7.49)	42.56	(8.36)	36.37	(5.03)	$<$	0.01	1.0	$<$ 0.01	$<$ 0.	05
LF/HF	1.01	(0.33)	1.18	(0.23)	1.65	(0.38)	$<$	0.01	0.329	$<$ 0.01	$<$ 0.	01
SampEn	2.55	(0.35)	2.30	(0.44)	2.18	(0.37)	$<$	0.05	0.068	$<$ 0.01	0.	353