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 |
- *Different from Music. 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.