Document Classification

Section Type: RESULTS

Text: Those of time domain were : standard deviation of NN intervals (SDNN, ms) 133. 41 + / - 8. 61 vs 115. 61 + / - 13. 49, average standard deviation of 5 min NN intervals (SDANN, ms) 126. 90 + / - 9. 99 vs 106. 20 + / - 8. 84, HRV trigonometric index (HRVTI) 35. 10 + / - 4. 48 vs 25. 51 + / - 2. 24 ; and those of frequency domain : low frequency (LF, ms2) 379. 90 + / - 159. 07 vs 477. 70 + / - 396. 91 high frequency (HF, ms2) 157. 10 + / - 28. 18 vs 122. 10 + / - 101. 90, and LF/HF ratio 2. 37 + / - 0. 52 vs 4. 27 + / - 2. 84.