Heart Rate Variability during Auricular Acupressure at Heart Point in Healthy Volunteers: A Pilot Study

Table 4

The variation of time domain.

Stage	SDNN (median (IQR))			RMSSD (median (IQR))			LF (median (IQR))			HF (median (IQR))
	Experimental group n = 57	Control group n = 57	value	Experimental group n = 57	Control group n = 57	value	Experimental group n = 57	Control group n = 57	value	Experimental group n = 57	Control group n = 57	value
T1	42.97 (33.19, 53.52)	42.71 (34.10, 55.84)	0.90	30.85 (19.51, 51.33)	32.41 (22.43, 46.10)	0.90	321.23 (167.65, 544.03)	290.37 (168.71, 680.75)	0.90	292.81 (131.04, 568.82)	281.96 (147.09, 519.95)	0.90
T2	43.65 (27.68, 53.84)	51.02 (34.89, 58.44)	0.65	29.11 (18.35, 49.64)	28.82 (21.70, 50.53)	0.65	292.14 (184.77, 562.70)	336.65 (169.43, 603.96)	0.65	278.62 (141.36, 545.21)	272.03 (161.88, 434.44)	0.65
T3	42.97 (26.65, 54.31)	44.81 (33.14, 54.79)	0.98	32.56 (19.42, 49.80)	34.47 (24.85, 53.97)	0.98	301.54 (176.90, 585.02)	318.40 (156.40, 634.21)	0.98	223.11 (113.14, 516.47)	270.55 (176.56, 496.28)	0.98
T4	45.30 (37.71, 57.54)	46.30 (40.15, 54.43)	0.82	31.24 (19.93, 51.26)	33.32 (22.10, 50.75)	0.82	308.70 (173.52, 593.46)	322.61 (174.94, 659.84)	0.82	269.36 (139.44, 554.53)	279.77 (186.05, 489.68)	0.82
T5	42.04 (29.60, 51.60)	46.16 (35.37, 54.62)	0.35	31.94 (17.24, 54.68)	31.28 (25.75, 50.46)	0.35	283.66 (146.31, 511.77)	364.90 (173.39, 609.40)	0.35	287.66 (153.18, 501.74)	316.51 (215.40, 555.57)	0.35
T6	45.75 (30.66, 55.94)	47.07 (37.20, 61.61)	0.29	27.52 (20.86, 47.27)	28.39 (21.66, 49.96)	0.29	255.83 (162.03, 513.95)	325.11 (161.59, 681.28)	0.29	252.31 (115.47, 597.09)	343.77 (219.05, 631.33)	0.29

IQR: interquartile range.