Table 3. Values of RR interval length (ms) and HF power (s².Hz⁻¹).

	RR length (ms)			HF power (s2.Hz−1)
Subjects	RR length min	RR length max	RR length mean	HF min	HF max	HF mean
S1	909.09	1132.08	1025.49±75.00	2.034	17.528	8.378±3.355
S2	923.08	1304.35	1085.54±101.58	4.527	18.357	10.316±2.911
S3	853.12	1363.64	1053.09±136	0.864	9.611	3.385±2.402
S4	800.00	1030.93	874.92±52.51	2.572	11.268	5.587±2.269
S5	796.07	1088.14	903.47±86.80	0.296	4.886	1.137±0.9429
S6	866.43	1090.91	958.48±66.40	0.109	5.164	2.153±1.472
S7	1034.48	1224.43	1126.43±45.30	1.930	9.430	4.841±1.864
S8	869.56	1153.85	1030.98±71.61	1.669	9.611	4.270±1.914
S9	1077.20	1388.89	1220.41±69.50	5.807	13.671	8.833±2.562
S10	821.92	1183.43	936.77±92.48	0.155	1.419	0.560±0.343