Table 5.

Correlation between the HRV parameters and the MMSE and MoCA test.

	MMSE	MoCA
SDNN (ms)	0.390**	0.481**
SDANN (ms)	0.324*	0.404**
RMSSD (ms)	0.156	0.099
LF (nu)	0.293**	0.336**
HF (nu)	−0.132	−0.135
LF/HF	0.248**	0.326**

SDNN, standard deviation of all normal to normal intervals; SDANN, standard deviation of average normal to normal intervals; RMSSD, square root of the mean of the sum of the squares of differences between adjacent normal to normal intervals; LF, low frequency; HF, high frequency. *p < 0.05; **p < 0.001