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. 2013 Aug 14;6:32. doi: 10.1186/1755-7682-6-32

Table 6.

Mean and standard deviation for time-domain indices between before and after the musical auditory stimulation at seated position

Index Standing Music p
SDNN (ms)
43.8±9
37.4±11
0.343
RMSSD (ms)
38.1±17
30.8±14
0.224
pNN50 (%) 17.4±16 12.5±13 0.402

N=12.

Legend: SDNN standard deviation of normal-to-normal R-R intervals, pNN50 - the percentage of adjacent RR intervals with a difference of duration greater than 50 ms, RMSSD root-mean square of differences between adjacent normal RR intervals in a time interval. ms millisecond.