Correlation between Palpitations below the Heart in Traditional Chinese Medicine and Autonomic Nerve Function Based on Heart Rate Variability: A Case-Control Study

Table 2

24-Hour HRV indexes between the two groups.

Group	SDNN	RMSSD	SDANN	TP	LF	HF	LF/HF
Palpitations below the heart group	164.44 ± 31.48	42.38 ± 12.18	157.63 ± 35.88	2161.35 (1789.70, 2695.58)	571.25 (515.23, 689.20)	459.15 (232.98, 818.20)	1.46 (0.88, 1.73)
Normal group	157.38 ± 27.69	36.75 ± 7.38	137.00 (129.25, 162.25)	2337.91 ± 513.17	715.30 ± 241.20	384.84 ± 180.79	1.62 (1.48, 2.73)
	0.596	0.245	0.462	0.624	0.426	0.462	0.159