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Table 4 Mean and standard deviation for time-domain indices between before and after the postural change maneuver in the music protocol

From: Previous exposure to musical auditory stimulation immediately influences the cardiac autonomic responses to the postural change maneuver in women

Index

Seated rest

Music

0-5 min

5-10 min

10-15 min

p

SDNN (ms)

44.2±14

53.7±16

50.2±14

47.6±11

46.2±9

0.580

RMSSD (ms)

35.7±15

37.4±15

24.9±9

*21.7±7

22.5±6

0.023

pNN50 (%)

16.9±16

17.7±15

7.2±7

*4.1±4

4.6±4

0.030

  1. *Different from Music. N=12.
  2. 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.