Table 1: Descriptive statistics of day/night time before and day/night time after EYT (mean value ± standard deviation) of HRV indices of day/night time before and day/night time after EYT including significance ( ) of differences (* , ** , and *** ; n.s.: not significant).

MethodIndexDay time before EYTNight time before EYT Day time after EYTNight time after EYT

HRVmeanNN *** ***
sdNN n.s. (0,54) n.s. (0,07)
ULF n.s. (0,33) **
LF/HF n.s. (0,38) n.s. (0,06)
LFn n.s. (0,06) *
HFn n.s. (0,06) *
(ULF + VLF)/P n.s. (0,07) ***

SD pW232 n.s. (0,08) **
pTH7 ** n.s. (0,26)

STSDpeak n.s. (0,06) **

MSEscale 2 n.s. (0,30) **
scale 20 ** n.s. (0,22)

: significance of differences: * , ** , and *** ; n.s.: not significant.